Inital import.
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).
(This change contains substantial changes from the original and
effectively starts a new history.)
diff --git a/crypto/ex_data_impl.c b/crypto/ex_data_impl.c
new file mode 100644
index 0000000..23d1fac
--- /dev/null
+++ b/crypto/ex_data_impl.c
@@ -0,0 +1,400 @@
+/* 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 <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/mem.h>
+#include <openssl/stack.h>
+#include <openssl/thread.h>
+
+#include "crypto_error.h"
+#include "internal.h"
+
+typedef struct crypto_ex_data_func_st {
+ long argl; /* Arbitary long */
+ void *argp; /* Arbitary void pointer */
+ CRYPTO_EX_new *new_func;
+ CRYPTO_EX_free *free_func;
+ CRYPTO_EX_dup *dup_func;
+} CRYPTO_EX_DATA_FUNCS;
+
+typedef struct st_ex_class_item {
+ STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth;
+ int class_value;
+ /* TODO(fork): isn't |meth_num| just the length of |meth|? */
+ int meth_num;
+} EX_CLASS_ITEM;
+
+static LHASH_OF(EX_CLASS_ITEM) *global_classes = NULL;
+
+static int global_next_class = 100;
+
+static int new_class(void) {
+ int ret;
+ CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
+ ret = global_next_class++;
+ CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
+
+ return ret;
+}
+
+/* class_hash is a hash function used by an LHASH of |EX_CLASS_ITEM|
+ * structures. */
+static uint32_t class_hash(const EX_CLASS_ITEM *a) {
+ return a->class_value;
+}
+
+/* class_cmp is a comparision function for an LHASH of |EX_CLASS_ITEM|
+ * structures. */
+static int class_cmp(const EX_CLASS_ITEM *a, const EX_CLASS_ITEM *b) {
+ return a->class_value - b->class_value;
+}
+
+/* data_funcs_free is a callback function from |sk_pop_free| that frees a
+ * |CRYPTO_EX_DATA_FUNCS|. */
+static void data_funcs_free(CRYPTO_EX_DATA_FUNCS *funcs) {
+ OPENSSL_free(funcs);
+}
+
+/* class_free is a callback function from lh_doall to free the EX_CLASS_ITEM
+ * structures. */
+static void class_free(EX_CLASS_ITEM *item) {
+ sk_CRYPTO_EX_DATA_FUNCS_pop_free(item->meth, data_funcs_free);
+}
+
+static LHASH_OF(EX_CLASS_ITEM) *get_classes() {
+ LHASH_OF(EX_CLASS_ITEM) *ret;
+
+ CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA);
+ ret = global_classes;
+ CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA);
+
+ if (ret != NULL) {
+ return ret;
+ }
+
+ CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
+ if (global_classes == NULL) {
+ global_classes = lh_EX_CLASS_ITEM_new(class_hash, class_cmp);
+ }
+ ret = global_classes;
+ CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
+
+ return ret;
+}
+
+static void cleanup(void) {
+ LHASH_OF(EX_CLASS_ITEM) *classes = get_classes();
+
+ lh_EX_CLASS_ITEM_doall(classes, class_free);
+ lh_EX_CLASS_ITEM_free(classes);
+
+ global_classes = NULL;
+}
+
+static EX_CLASS_ITEM *get_class(int class_value) {
+ LHASH_OF(EX_CLASS_ITEM) *const classes = get_classes();
+ EX_CLASS_ITEM template, *class_item;
+ int ok = 0;
+
+ CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
+ template.class_value = class_value;
+ class_item = lh_EX_CLASS_ITEM_retrieve(classes, &template);
+ if (class_item != NULL) {
+ ok = 1;
+ } else {
+ class_item = OPENSSL_malloc(sizeof(EX_CLASS_ITEM));
+ if (class_item) {
+ class_item->class_value = class_value;
+ class_item->meth_num = 0;
+ class_item->meth = sk_CRYPTO_EX_DATA_FUNCS_new_null();
+ if (class_item->meth != NULL) {
+ EX_CLASS_ITEM *old_data;
+ ok = lh_EX_CLASS_ITEM_insert(classes, &old_data, class_item);
+ assert(old_data == NULL);
+ }
+ }
+ }
+ CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
+
+ if (!ok) {
+ if (class_item) {
+ if (class_item->meth) {
+ sk_CRYPTO_EX_DATA_FUNCS_free(class_item->meth);
+ }
+ OPENSSL_free(class_item);
+ class_item = NULL;
+ }
+
+ OPENSSL_PUT_ERROR(CRYPTO, get_class, ERR_R_MALLOC_FAILURE);
+ }
+
+ return class_item;
+}
+
+static int get_new_index(int class_value, long argl, void *argp,
+ CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func,
+ CRYPTO_EX_free *free_func) {
+ EX_CLASS_ITEM *const item = get_class(class_value);
+ CRYPTO_EX_DATA_FUNCS *funcs;
+ int ret = -1;
+
+ if (!item) {
+ return -1;
+ }
+
+ funcs = OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS));
+ if (funcs == NULL) {
+ OPENSSL_PUT_ERROR(CRYPTO, get_new_index, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+
+ funcs->argl = argl;
+ funcs->argp = argp;
+ funcs->new_func = new_func;
+ funcs->dup_func = dup_func;
+ funcs->free_func = free_func;
+
+ CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
+ /* TODO(fork): this loop appears to only ever run once. */
+ while (sk_CRYPTO_EX_DATA_FUNCS_num(item->meth) <= item->meth_num) {
+ if (!sk_CRYPTO_EX_DATA_FUNCS_push(item->meth, NULL)) {
+ OPENSSL_PUT_ERROR(CRYPTO, get_new_index, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(funcs);
+ goto err;
+ }
+ }
+
+ ret = item->meth_num++;
+ (void)sk_CRYPTO_EX_DATA_FUNCS_set(item->meth, ret, funcs);
+
+err:
+ CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
+ return ret;
+}
+
+/* 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,
+ int class_value) {
+ EX_CLASS_ITEM *const item = get_class(class_value);
+ size_t n;
+
+ if (!item) {
+ return 0;
+ }
+
+ *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_r_lock(CRYPTO_LOCK_EX_DATA);
+ n = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth);
+ if (n > 0) {
+ *out = sk_CRYPTO_EX_DATA_FUNCS_dup(item->meth);
+ }
+ CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA);
+
+ if (n > 0 && *out == NULL) {
+ OPENSSL_PUT_ERROR(CRYPTO, get_func_pointers, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ return 1;
+}
+
+static int new_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
+ STACK_OF(CRYPTO_EX_DATA_FUNCS) *func_pointers;
+ size_t i;
+
+ ad->sk = NULL;
+
+ if (!get_func_pointers(&func_pointers, class_value)) {
+ return 0;
+ }
+
+ for (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->new_func) {
+ func_pointer->new_func(obj, NULL, ad, i, func_pointer->argl,
+ func_pointer->argp);
+ }
+ }
+
+ sk_CRYPTO_EX_DATA_FUNCS_free(func_pointers);
+
+ return 1;
+}
+
+static int dup_ex_data(int class_value, CRYPTO_EX_DATA *to,
+ const CRYPTO_EX_DATA *from) {
+ STACK_OF(CRYPTO_EX_DATA_FUNCS) *func_pointers;
+ size_t i;
+
+ if (!from->sk) {
+ /* In this case, |from| is blank, which is also the initial state of |to|,
+ * so there's nothing to do. */
+ return 1;
+ }
+
+ if (!get_func_pointers(&func_pointers, class_value)) {
+ return 0;
+ }
+
+ for (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);
+ void *ptr = CRYPTO_get_ex_data(from, i);
+ if (func_pointer->dup_func) {
+ func_pointer->dup_func(to, from, &ptr, i, func_pointer->argl,
+ func_pointer->argp);
+ }
+ CRYPTO_set_ex_data(to, i, ptr);
+ }
+
+ sk_CRYPTO_EX_DATA_FUNCS_free(func_pointers);
+
+ return 1;
+}
+
+static void free_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
+ STACK_OF(CRYPTO_EX_DATA_FUNCS) *func_pointers;
+ size_t i;
+
+ if (!get_func_pointers(&func_pointers, class_value)) {
+ return;
+ }
+
+ for (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);
+ func_pointer->free_func(obj, ptr, ad, i, func_pointer->argl,
+ func_pointer->argp);
+ }
+ }
+
+ sk_CRYPTO_EX_DATA_FUNCS_free(func_pointers);
+
+ if (ad->sk) {
+ sk_void_free(ad->sk);
+ ad->sk = NULL;
+ }
+}
+
+const CRYPTO_EX_DATA_IMPL ex_data_default_impl = {
+ new_class, cleanup, get_new_index, new_ex_data, dup_ex_data, free_ex_data};
