Upgraded to openssl-1.0.2

1 files changed, 298 insertions, 0 deletions

diff --git a/openssl/ssl/t1_ext.c b/openssl/ssl/t1_ext.c
new file mode 100755
index 000000000..724ddf76a
--- /dev/null
+++ b/openssl/ssl/t1_ext.c
@@ -0,0 +1,298 @@
+/* ssl/t1_ext.c */
+/* ====================================================================
+ * Copyright (c) 2014 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).
+ *
+ */
+
+/* Custom extension utility functions */
+
+#include "ssl_locl.h"
+
+#ifndef OPENSSL_NO_TLSEXT
+
+/* Find a custom extension from the list. */
+static custom_ext_method *custom_ext_find(custom_ext_methods *exts,
+                                          unsigned int ext_type)
+{
+    size_t i;
+    custom_ext_method *meth = exts->meths;
+    for (i = 0; i < exts->meths_count; i++, meth++) {
+        if (ext_type == meth->ext_type)
+            return meth;
+    }
+    return NULL;
+}
+
+/*
+ * Initialise custom extensions flags to indicate neither sent nor received.
+ */
+void custom_ext_init(custom_ext_methods *exts)
+{
+    size_t i;
+    custom_ext_method *meth = exts->meths;
+    for (i = 0; i < exts->meths_count; i++, meth++)
+        meth->ext_flags = 0;
+}
+
+/* Pass received custom extension data to the application for parsing. */
+int custom_ext_parse(SSL *s, int server,
+                     unsigned int ext_type,
+                     const unsigned char *ext_data, size_t ext_size, int *al)
+{
+    custom_ext_methods *exts = server ? &s->cert->srv_ext : &s->cert->cli_ext;
+    custom_ext_method *meth;
+    meth = custom_ext_find(exts, ext_type);
+    /* If not found return success */
+    if (!meth)
+        return 1;
+    if (!server) {
+        /*
+         * If it's ServerHello we can't have any extensions not sent in
+         * ClientHello.
+         */
+        if (!(meth->ext_flags & SSL_EXT_FLAG_SENT)) {
+            *al = TLS1_AD_UNSUPPORTED_EXTENSION;
+            return 0;
+        }
+    }
+    /* If already present it's a duplicate */
+    if (meth->ext_flags & SSL_EXT_FLAG_RECEIVED) {
+        *al = TLS1_AD_DECODE_ERROR;
+        return 0;
+    }
+    meth->ext_flags |= SSL_EXT_FLAG_RECEIVED;
+    /* If no parse function set return success */
+    if (!meth->parse_cb)
+        return 1;
+
+    return meth->parse_cb(s, ext_type, ext_data, ext_size, al,
+                          meth->parse_arg);
+}
+
+/*
+ * Request custom extension data from the application and add to the return
+ * buffer.
+ */
+int custom_ext_add(SSL *s, int server,
+                   unsigned char **pret, unsigned char *limit, int *al)
+{
+    custom_ext_methods *exts = server ? &s->cert->srv_ext : &s->cert->cli_ext;
+    custom_ext_method *meth;
+    unsigned char *ret = *pret;
+    size_t i;
+
+    for (i = 0; i < exts->meths_count; i++) {
+        const unsigned char *out = NULL;
+        size_t outlen = 0;
+        meth = exts->meths + i;
+
+        if (server) {
+            /*
+             * For ServerHello only send extensions present in ClientHello.
+             */
+            if (!(meth->ext_flags & SSL_EXT_FLAG_RECEIVED))
+                continue;
+            /* If callback absent for server skip it */
+            if (!meth->add_cb)
+                continue;
+        }
+        if (meth->add_cb) {
+            int cb_retval = 0;
+            cb_retval = meth->add_cb(s, meth->ext_type,
+                                     &out, &outlen, al, meth->add_arg);
+            if (cb_retval < 0)
+                return 0;       /* error */
+            if (cb_retval == 0)
+                continue;       /* skip this extension */
+        }
+        if (4 > limit - ret || outlen > (size_t)(limit - ret - 4))
+            return 0;
+        s2n(meth->ext_type, ret);
+        s2n(outlen, ret);
+        if (outlen) {
+            memcpy(ret, out, outlen);
+            ret += outlen;
+        }
+        /*
+         * We can't send duplicates: code logic should prevent this.
+         */
+        OPENSSL_assert(!(meth->ext_flags & SSL_EXT_FLAG_SENT));
+        /*
+         * Indicate extension has been sent: this is both a sanity check to
+         * ensure we don't send duplicate extensions and indicates that it is
+         * not an error if the extension is present in ServerHello.
+         */
+        meth->ext_flags |= SSL_EXT_FLAG_SENT;
+        if (meth->free_cb)
+            meth->free_cb(s, meth->ext_type, out, meth->add_arg);
+    }
+    *pret = ret;
+    return 1;
+}
+
+/* Copy table of custom extensions */
+int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src)
+{
+    if (src->meths_count) {
+        dst->meths =
+            BUF_memdup(src->meths,
+                       sizeof(custom_ext_method) * src->meths_count);
+        if (dst->meths == NULL)
+            return 0;
+        dst->meths_count = src->meths_count;
+    }
+    return 1;
+}
+
+void custom_exts_free(custom_ext_methods *exts)
+{
+    if (exts->meths)
+        OPENSSL_free(exts->meths);
+}
+
+/* Set callbacks for a custom extension. */
+static int custom_ext_meth_add(custom_ext_methods *exts,
+                               unsigned int ext_type,
+                               custom_ext_add_cb add_cb,
+                               custom_ext_free_cb free_cb,
+                               void *add_arg,
+                               custom_ext_parse_cb parse_cb, void *parse_arg)
+{
+    custom_ext_method *meth;
+    /*
+     * Check application error: if add_cb is not set free_cb will never be
+     * called.
+     */
+    if (!add_cb && free_cb)
+        return 0;
+    /* Don't add if extension supported internally. */
+    if (SSL_extension_supported(ext_type))
+        return 0;
+    /* Extension type must fit in 16 bits */
+    if (ext_type > 0xffff)
+        return 0;
+    /* Search for duplicate */
+    if (custom_ext_find(exts, ext_type))
+        return 0;
+    exts->meths = OPENSSL_realloc(exts->meths,
+                                  (exts->meths_count +
+                                   1) * sizeof(custom_ext_method));
+
+    if (!exts->meths) {
+        exts->meths_count = 0;
+        return 0;
+    }
+
+    meth = exts->meths + exts->meths_count;
+    memset(meth, 0, sizeof(custom_ext_method));
+    meth->parse_cb = parse_cb;
+    meth->add_cb = add_cb;
+    meth->free_cb = free_cb;
+    meth->ext_type = ext_type;
+    meth->add_arg = add_arg;
+    meth->parse_arg = parse_arg;
+    exts->meths_count++;
+    return 1;
+}
+
+/* Application level functions to add custom extension callbacks */
+int SSL_CTX_add_client_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
+                                  custom_ext_add_cb add_cb,
+                                  custom_ext_free_cb free_cb,
+                                  void *add_arg,
+                                  custom_ext_parse_cb parse_cb,
+                                  void *parse_arg)
+{
+    return custom_ext_meth_add(&ctx->cert->cli_ext, ext_type,
+                               add_cb, free_cb, add_arg, parse_cb, parse_arg);
+}
+
+int SSL_CTX_add_server_custom_ext(SSL_CTX *ctx, unsigned int ext_type,
+                                  custom_ext_add_cb add_cb,
+                                  custom_ext_free_cb free_cb,
+                                  void *add_arg,
+                                  custom_ext_parse_cb parse_cb,
+                                  void *parse_arg)
+{
+    return custom_ext_meth_add(&ctx->cert->srv_ext, ext_type,
+                               add_cb, free_cb, add_arg, parse_cb, parse_arg);
+}
+
+int SSL_extension_supported(unsigned int ext_type)
+{
+    switch (ext_type) {
+        /* Internally supported extensions. */
+    case TLSEXT_TYPE_application_layer_protocol_negotiation:
+    case TLSEXT_TYPE_ec_point_formats:
+    case TLSEXT_TYPE_elliptic_curves:
+    case TLSEXT_TYPE_heartbeat:
+    case TLSEXT_TYPE_next_proto_neg:
+    case TLSEXT_TYPE_padding:
+    case TLSEXT_TYPE_renegotiate:
+    case TLSEXT_TYPE_server_name:
+    case TLSEXT_TYPE_session_ticket:
+    case TLSEXT_TYPE_signature_algorithms:
+    case TLSEXT_TYPE_srp:
+    case TLSEXT_TYPE_status_request:
+    case TLSEXT_TYPE_use_srtp:
+# ifdef TLSEXT_TYPE_opaque_prf_input
+    case TLSEXT_TYPE_opaque_prf_input:
+# endif
+# ifdef TLSEXT_TYPE_encrypt_then_mac
+    case TLSEXT_TYPE_encrypt_then_mac:
+# endif
+        return 1;
+    default:
+        return 0;
+    }
+}
+#endif