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/*
* nghttp3
*
* Copyright (c) 2025 nghttp3 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "nghttp3_callbacks.h"
#include <string.h>
#include <assert.h>
#include "nghttp3_unreachable.h"
static void callbacks_copy(nghttp3_callbacks *dest,
const nghttp3_callbacks *src,
int callbacks_version) {
assert(callbacks_version != NGHTTP3_CALLBACKS_VERSION);
memcpy(dest, src, nghttp3_callbackslen_version(callbacks_version));
}
const nghttp3_callbacks *
nghttp3_callbacks_convert_to_latest(nghttp3_callbacks *dest,
int callbacks_version,
const nghttp3_callbacks *src) {
if (callbacks_version == NGHTTP3_CALLBACKS_VERSION) {
return src;
}
memset(dest, 0, sizeof(*dest));
callbacks_copy(dest, src, callbacks_version);
return dest;
}
void nghttp3_callbacks_convert_to_old(int callbacks_version,
nghttp3_callbacks *dest,
const nghttp3_callbacks *src) {
assert(callbacks_version != NGHTTP3_CALLBACKS_VERSION);
callbacks_copy(dest, src, callbacks_version);
}
size_t nghttp3_callbackslen_version(int callbacks_version) {
nghttp3_callbacks callbacks;
switch (callbacks_version) {
case NGHTTP3_CALLBACKS_VERSION:
return sizeof(callbacks);
case NGHTTP3_CALLBACKS_V2:
return offsetof(nghttp3_callbacks, rand) + sizeof(callbacks.rand);
case NGHTTP3_CALLBACKS_V1:
return offsetof(nghttp3_callbacks, recv_settings) +
sizeof(callbacks.recv_settings);
default:
nghttp3_unreachable();
}
}
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