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/*
* Copyright 2024 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/crypto.h>
#include <openssl/comp.h>
#include <openssl/obj_mac.h>
#include "internal/cryptlib.h"
#include "internal/comp.h"
#define SSL_COMP_NULL_IDX 0
#define SSL_COMP_ZLIB_IDX 1
#define SSL_COMP_NUM_IDX 2
#ifndef OPENSSL_NO_COMP
static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
{
return ((*a)->id - (*b)->id);
}
#endif
STACK_OF(SSL_COMP) *ossl_load_builtin_compressions(void)
{
STACK_OF(SSL_COMP) *comp_methods = NULL;
#ifndef OPENSSL_NO_COMP
SSL_COMP *comp = NULL;
COMP_METHOD *method = COMP_zlib();
comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
if (COMP_get_type(method) != NID_undef && comp_methods != NULL) {
comp = OPENSSL_malloc(sizeof(*comp));
if (comp != NULL) {
comp->method = method;
comp->id = SSL_COMP_ZLIB_IDX;
comp->name = COMP_get_name(method);
if (!sk_SSL_COMP_push(comp_methods, comp))
OPENSSL_free(comp);
}
}
#endif
return comp_methods;
}
static void cmeth_free(SSL_COMP *cm)
{
OPENSSL_free(cm);
}
void ossl_free_compression_methods_int(STACK_OF(SSL_COMP) *methods)
{
sk_SSL_COMP_pop_free(methods, cmeth_free);
}
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