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author | Adam Langley <agl@google.com> | 2015-01-22 14:27:53 -0800 |
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committer | Adam Langley <agl@google.com> | 2015-01-30 16:52:14 -0800 |
commit | d9e397b599b13d642138480a28c14db7a136bf05 (patch) | |
tree | 34bab61dc4ce323b123ad4614dbc07e86ea2f9ef /src/crypto/ex_data.c | |
download | external_boringssl-d9e397b599b13d642138480a28c14db7a136bf05.zip external_boringssl-d9e397b599b13d642138480a28c14db7a136bf05.tar.gz external_boringssl-d9e397b599b13d642138480a28c14db7a136bf05.tar.bz2 |
Initial commit of BoringSSL for Android.
Diffstat (limited to 'src/crypto/ex_data.c')
-rw-r--r-- | src/crypto/ex_data.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/crypto/ex_data.c b/src/crypto/ex_data.c new file mode 100644 index 0000000..0c2503e --- /dev/null +++ b/src/crypto/ex_data.c @@ -0,0 +1,227 @@ +/* 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) 1998-2001 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). */ + +#include <openssl/ex_data.h> + +#include <openssl/err.h> +#include <openssl/thread.h> + +#include "crypto_error.h" +#include "internal.h" + + +/* global_impl is the implementation that we use at runtime. */ +static const CRYPTO_EX_DATA_IMPL *global_impl = NULL; + +/* ex_data_default_impl is a the default implementation, defined in + * ex_data_impl.c. */ +extern const CRYPTO_EX_DATA_IMPL ex_data_default_impl; + +/* get_impl returns the current ex_data implementatation. */ +static const CRYPTO_EX_DATA_IMPL *get_impl(void) { + const CRYPTO_EX_DATA_IMPL *impl; + + CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); + impl = global_impl; + CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); + + if (impl != NULL) { + return impl; + } + + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + if (global_impl == NULL) { + global_impl = &ex_data_default_impl; + } + impl = global_impl; + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + return impl; +} + +int CRYPTO_get_ex_new_index(int class_value, long argl, void *argp, + CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, + CRYPTO_EX_free *free_func) { + const CRYPTO_EX_DATA_IMPL *const impl = get_impl(); + return impl->get_new_index(class_value, argl, argp, new_func, dup_func, + free_func); +} + +int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val) { + int n, i; + + if (ad->sk == NULL) { + ad->sk = sk_void_new_null(); + if (ad->sk == NULL) { + OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE); + return 0; + } + } + + n = sk_void_num(ad->sk); + + /* Add NULL values until the stack is long enough. */ + for (i = n; i <= index; i++) { + if (!sk_void_push(ad->sk, NULL)) { + OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE); + return 0; + } + } + + sk_void_set(ad->sk, index, val); + return 1; +} + +void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) { + if (ad->sk == NULL || idx < 0 || (size_t)idx >= sk_void_num(ad->sk)) { + return NULL; + } + return sk_void_value(ad->sk, idx); +} + +int CRYPTO_ex_data_new_class(void) { + const CRYPTO_EX_DATA_IMPL *const impl = get_impl(); + return impl->new_class(); +} + +int CRYPTO_new_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) { + const CRYPTO_EX_DATA_IMPL *const impl = get_impl(); + return impl->new_ex_data(class_value, obj, ad); +} + +int CRYPTO_dup_ex_data(int class_value, CRYPTO_EX_DATA *to, + const CRYPTO_EX_DATA *from) { + const CRYPTO_EX_DATA_IMPL *const impl = get_impl(); + return impl->dup_ex_data(class_value, to, from); +} + +void CRYPTO_free_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) { + const CRYPTO_EX_DATA_IMPL *const impl = get_impl(); + impl->free_ex_data(class_value, obj, ad); +} + +const CRYPTO_EX_DATA_IMPL *CRYPTO_get_ex_data_implementation(void) { + return get_impl(); +} + +int CRYPTO_set_ex_data_implementation(const CRYPTO_EX_DATA_IMPL *impl) { + int ret = 0; + + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + if (global_impl == NULL) { + ret = 1; + global_impl = impl; + } + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + + return ret; +} + +void CRYPTO_cleanup_all_ex_data(void) { + const CRYPTO_EX_DATA_IMPL *const impl = get_impl(); + impl->cleanup(); +} |