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-rw-r--r--thirdparty/openssl/crypto/stack/stack.c384
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diff --git a/thirdparty/openssl/crypto/stack/stack.c b/thirdparty/openssl/crypto/stack/stack.c
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+/* crypto/stack/stack.c */
+/* 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.]
+ */
+
+/*-
+ * Code for stacks
+ * Author - Eric Young v 1.0
+ * 1.2 eay 12-Mar-97 - Modified sk_find so that it _DOES_ return the
+ * lowest index for the searched item.
+ *
+ * 1.1 eay - Take from netdb and added to SSLeay
+ *
+ * 1.0 eay - First version 29/07/92
+ */
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/stack.h>
+#include <openssl/objects.h>
+
+#undef MIN_NODES
+#define MIN_NODES 4
+
+const char STACK_version[] = "Stack" OPENSSL_VERSION_PTEXT;
+
+#include <errno.h>
+
+int (*sk_set_cmp_func(_STACK *sk, int (*c) (const void *, const void *)))
+ (const void *, const void *) {
+ int (*old) (const void *, const void *) = sk->comp;
+
+ if (sk->comp != c)
+ sk->sorted = 0;
+ sk->comp = c;
+
+ return old;
+}
+
+_STACK *sk_dup(_STACK *sk)
+{
+ _STACK *ret;
+ char **s;
+
+ if ((ret = sk_new(sk->comp)) == NULL)
+ goto err;
+ s = (char **)OPENSSL_realloc((char *)ret->data,
+ (unsigned int)sizeof(char *) *
+ sk->num_alloc);
+ if (s == NULL)
+ goto err;
+ ret->data = s;
+
+ ret->num = sk->num;
+ memcpy(ret->data, sk->data, sizeof(char *) * sk->num);
+ ret->sorted = sk->sorted;
+ ret->num_alloc = sk->num_alloc;
+ ret->comp = sk->comp;
+ return (ret);
+ err:
+ if (ret)
+ sk_free(ret);
+ return (NULL);
+}
+
+_STACK *sk_deep_copy(_STACK *sk, void *(*copy_func) (void *),
+ void (*free_func) (void *))
+{
+ _STACK *ret;
+ int i;
+
+ if ((ret = OPENSSL_malloc(sizeof(_STACK))) == NULL)
+ return ret;
+ ret->comp = sk->comp;
+ ret->sorted = sk->sorted;
+ ret->num = sk->num;
+ ret->num_alloc = sk->num > MIN_NODES ? sk->num : MIN_NODES;
+ ret->data = OPENSSL_malloc(sizeof(char *) * ret->num_alloc);
+ if (ret->data == NULL) {
+ OPENSSL_free(ret);
+ return NULL;
+ }
+ for (i = 0; i < ret->num_alloc; i++)
+ ret->data[i] = NULL;
+
+ for (i = 0; i < ret->num; ++i) {
+ if (sk->data[i] == NULL)
+ continue;
+ if ((ret->data[i] = copy_func(sk->data[i])) == NULL) {
+ while (--i >= 0)
+ if (ret->data[i] != NULL)
+ free_func(ret->data[i]);
+ sk_free(ret);
+ return NULL;
+ }
+ }
+ return ret;
+}
+
+_STACK *sk_new_null(void)
+{
+ return sk_new((int (*)(const void *, const void *))0);
+}
+
+_STACK *sk_new(int (*c) (const void *, const void *))
+{
+ _STACK *ret;
+ int i;
+
+ if ((ret = OPENSSL_malloc(sizeof(_STACK))) == NULL)
+ goto err;
+ if ((ret->data = OPENSSL_malloc(sizeof(char *) * MIN_NODES)) == NULL)
+ goto err;
+ for (i = 0; i < MIN_NODES; i++)
+ ret->data[i] = NULL;
+ ret->comp = c;
+ ret->num_alloc = MIN_NODES;
+ ret->num = 0;
+ ret->sorted = 0;
+ return (ret);
+ err:
+ if (ret)
+ OPENSSL_free(ret);
+ return (NULL);
+}
+
+int sk_insert(_STACK *st, void *data, int loc)
+{
+ char **s;
+
+ if (st == NULL)
+ return 0;
+ if (st->num_alloc <= st->num + 1) {
+ s = OPENSSL_realloc((char *)st->data,
+ (unsigned int)sizeof(char *) * st->num_alloc * 2);
+ if (s == NULL)
+ return (0);
+ st->data = s;
+ st->num_alloc *= 2;
+ }
+ if ((loc >= (int)st->num) || (loc < 0))
+ st->data[st->num] = data;
+ else {
+ int i;
+ char **f, **t;
+
+ f = st->data;
+ t = &(st->data[1]);
+ for (i = st->num; i >= loc; i--)
+ t[i] = f[i];
+
+#ifdef undef /* no memmove on sunos :-( */
+ memmove(&(st->data[loc + 1]),
+ &(st->data[loc]), sizeof(char *) * (st->num - loc));
+#endif
+ st->data[loc] = data;
+ }
+ st->num++;
+ st->sorted = 0;
+ return (st->num);
+}
+
+void *sk_delete_ptr(_STACK *st, void *p)
+{
+ int i;
+
+ for (i = 0; i < st->num; i++)
+ if (st->data[i] == p)
+ return (sk_delete(st, i));
+ return (NULL);
+}
+
+void *sk_delete(_STACK *st, int loc)
+{
+ char *ret;
+ int i, j;
+
+ if (!st || (loc < 0) || (loc >= st->num))
+ return NULL;
+
+ ret = st->data[loc];
+ if (loc != st->num - 1) {
+ j = st->num - 1;
+ for (i = loc; i < j; i++)
+ st->data[i] = st->data[i + 1];
+ /*
+ * In theory memcpy is not safe for this memcpy( &(st->data[loc]),
+ * &(st->data[loc+1]), sizeof(char *)*(st->num-loc-1));
+ */
+ }
+ st->num--;
+ return (ret);
+}
+
+static int internal_find(_STACK *st, void *data, int ret_val_options)
+{
+ const void *const *r;
+ int i;
+
+ if (st == NULL)
+ return -1;
+
+ if (st->comp == NULL) {
+ for (i = 0; i < st->num; i++)
+ if (st->data[i] == data)
+ return (i);
+ return (-1);
+ }
+ sk_sort(st);
+ if (data == NULL)
+ return (-1);
+ r = OBJ_bsearch_ex_(&data, st->data, st->num, sizeof(void *), st->comp,
+ ret_val_options);
+ if (r == NULL)
+ return (-1);
+ return (int)((char **)r - st->data);
+}
+
+int sk_find(_STACK *st, void *data)
+{
+ return internal_find(st, data, OBJ_BSEARCH_FIRST_VALUE_ON_MATCH);
+}
+
+int sk_find_ex(_STACK *st, void *data)
+{
+ return internal_find(st, data, OBJ_BSEARCH_VALUE_ON_NOMATCH);
+}
+
+int sk_push(_STACK *st, void *data)
+{
+ return (sk_insert(st, data, st->num));
+}
+
+int sk_unshift(_STACK *st, void *data)
+{
+ return (sk_insert(st, data, 0));
+}
+
+void *sk_shift(_STACK *st)
+{
+ if (st == NULL)
+ return (NULL);
+ if (st->num <= 0)
+ return (NULL);
+ return (sk_delete(st, 0));
+}
+
+void *sk_pop(_STACK *st)
+{
+ if (st == NULL)
+ return (NULL);
+ if (st->num <= 0)
+ return (NULL);
+ return (sk_delete(st, st->num - 1));
+}
+
+void sk_zero(_STACK *st)
+{
+ if (st == NULL)
+ return;
+ if (st->num <= 0)
+ return;
+ memset((char *)st->data, 0, sizeof(*st->data) * st->num);
+ st->num = 0;
+}
+
+void sk_pop_free(_STACK *st, void (*func) (void *))
+{
+ int i;
+
+ if (st == NULL)
+ return;
+ for (i = 0; i < st->num; i++)
+ if (st->data[i] != NULL)
+ func(st->data[i]);
+ sk_free(st);
+}
+
+void sk_free(_STACK *st)
+{
+ if (st == NULL)
+ return;
+ if (st->data != NULL)
+ OPENSSL_free(st->data);
+ OPENSSL_free(st);
+}
+
+int sk_num(const _STACK *st)
+{
+ if (st == NULL)
+ return -1;
+ return st->num;
+}
+
+void *sk_value(const _STACK *st, int i)
+{
+ if (!st || (i < 0) || (i >= st->num))
+ return NULL;
+ return st->data[i];
+}
+
+void *sk_set(_STACK *st, int i, void *value)
+{
+ if (!st || (i < 0) || (i >= st->num))
+ return NULL;
+ return (st->data[i] = value);
+}
+
+void sk_sort(_STACK *st)
+{
+ if (st && !st->sorted && st->comp != NULL) {
+ int (*comp_func) (const void *, const void *);
+
+ /*
+ * same comment as in sk_find ... previously st->comp was declared as
+ * a (void*,void*) callback type, but this made the population of the
+ * callback pointer illogical - our callbacks compare type** with
+ * type**, so we leave the casting until absolutely necessary (ie.
+ * "now").
+ */
+ comp_func = (int (*)(const void *, const void *))(st->comp);
+ qsort(st->data, st->num, sizeof(char *), comp_func);
+ st->sorted = 1;
+ }
+}
+
+int sk_is_sorted(const _STACK *st)
+{
+ if (!st)
+ return 1;
+ return st->sorted;
+}
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