--- /dev/null
+/* 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 <assert.h>
+#include <string.h>
+
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#include "internal.h"
+
+
+DEFINE_STACK_OF(CRYPTO_EX_DATA_FUNCS)
+
+struct crypto_ex_data_func_st {
+ long argl; // Arbitary long
+ void *argp; // Arbitary void pointer
+ CRYPTO_EX_free *free_func;
+};
+
+int CRYPTO_get_ex_new_index(CRYPTO_EX_DATA_CLASS *ex_data_class, int *out_index,
+ long argl, void *argp, CRYPTO_EX_free *free_func) {
+ CRYPTO_EX_DATA_FUNCS *funcs;
+ int ret = 0;
+
+ funcs = OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS));
+ if (funcs == NULL) {
+ OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ funcs->argl = argl;
+ funcs->argp = argp;
+ funcs->free_func = free_func;
+
+ CRYPTO_STATIC_MUTEX_lock_write(&ex_data_class->lock);
+
+ if (ex_data_class->meth == NULL) {
+ ex_data_class->meth = sk_CRYPTO_EX_DATA_FUNCS_new_null();
+ }
+
+ if (ex_data_class->meth == NULL ||
+ !sk_CRYPTO_EX_DATA_FUNCS_push(ex_data_class->meth, funcs)) {
+ OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(funcs);
+ goto err;
+ }
+
+ *out_index = sk_CRYPTO_EX_DATA_FUNCS_num(ex_data_class->meth) - 1 +
+ ex_data_class->num_reserved;
+ ret = 1;
+
+err:
+ CRYPTO_STATIC_MUTEX_unlock_write(&ex_data_class->lock);
+ return ret;
+}
+
+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, 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, 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);
+}
+
+// get_func_pointers takes a copy of the CRYPTO_EX_DATA_FUNCS pointers, if any,
+// for the given class. If there are some pointers, it sets |*out| to point to
+// a fresh stack of them. Otherwise it sets |*out| to NULL. It returns one on
+// success or zero on error.
+static int get_func_pointers(STACK_OF(CRYPTO_EX_DATA_FUNCS) **out,
+ CRYPTO_EX_DATA_CLASS *ex_data_class) {
+ size_t n;
+
+ *out = NULL;
+
+ // CRYPTO_EX_DATA_FUNCS structures are static once set, so we can take a
+ // shallow copy of the list under lock and then use the structures without
+ // the lock held.
+ CRYPTO_STATIC_MUTEX_lock_read(&ex_data_class->lock);
+ n = sk_CRYPTO_EX_DATA_FUNCS_num(ex_data_class->meth);
+ if (n > 0) {
+ *out = sk_CRYPTO_EX_DATA_FUNCS_dup(ex_data_class->meth);
+ }
+ CRYPTO_STATIC_MUTEX_unlock_read(&ex_data_class->lock);
+
+ if (n > 0 && *out == NULL) {
+ OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ return 1;
+}
+
+void CRYPTO_new_ex_data(CRYPTO_EX_DATA *ad) {
+ ad->sk = NULL;
+}
+
+void CRYPTO_free_ex_data(CRYPTO_EX_DATA_CLASS *ex_data_class, void *obj,
+ CRYPTO_EX_DATA *ad) {
+ if (ad->sk == NULL) {
+ // Nothing to do.
+ return;
+ }
+
+ STACK_OF(CRYPTO_EX_DATA_FUNCS) *func_pointers;
+ if (!get_func_pointers(&func_pointers, ex_data_class)) {
+ // TODO(davidben): This leaks memory on malloc error.
+ return;
+ }
+
+ for (size_t i = 0; i < sk_CRYPTO_EX_DATA_FUNCS_num(func_pointers); i++) {
+ CRYPTO_EX_DATA_FUNCS *func_pointer =
+ sk_CRYPTO_EX_DATA_FUNCS_value(func_pointers, i);
+ if (func_pointer->free_func) {
+ void *ptr = CRYPTO_get_ex_data(ad, i + ex_data_class->num_reserved);
+ func_pointer->free_func(obj, ptr, ad, i + ex_data_class->num_reserved,
+ func_pointer->argl, func_pointer->argp);
+ }
+ }
+
+ sk_CRYPTO_EX_DATA_FUNCS_free(func_pointers);
+
+ sk_void_free(ad->sk);
+ ad->sk = NULL;
+}
+
+void CRYPTO_cleanup_all_ex_data(void) {}
git://repos.xcallymotion.com / motion2.git / blobdiff