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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <assert.h>
#include <stddef.h>
#include <httpd.h>
#include <http_core.h>
#include <http_connection.h>
#include <http_log.h>
#include "h2_private.h"
#include "h2.h"
#include "h2_mplx.h"
#include "h2_stream.h"
#include "h2_bucket_eos.h"
typedef struct {
apr_bucket_refcount refcount;
h2_stream *stream;
} h2_bucket_eos;
static apr_status_t bucket_cleanup(void *data)
{
h2_stream **pstream = data;
if (*pstream) {
/* If bucket_destroy is called after us, this prevents
* bucket_destroy from trying to destroy the stream again. */
*pstream = NULL;
}
return APR_SUCCESS;
}
static apr_status_t bucket_read(apr_bucket *b, const char **str,
apr_size_t *len, apr_read_type_e block)
{
(void)b;
(void)block;
*str = NULL;
*len = 0;
return APR_SUCCESS;
}
apr_bucket *h2_bucket_eos_make(apr_bucket *b, h2_stream *stream)
{
h2_bucket_eos *h;
h = apr_bucket_alloc(sizeof(*h), b->list);
h->stream = stream;
b = apr_bucket_shared_make(b, h, 0, 0);
b->type = &h2_bucket_type_eos;
return b;
}
apr_bucket *h2_bucket_eos_create(apr_bucket_alloc_t *list,
h2_stream *stream)
{
apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
APR_BUCKET_INIT(b);
b->free = apr_bucket_free;
b->list = list;
b = h2_bucket_eos_make(b, stream);
if (stream) {
h2_bucket_eos *h = b->data;
apr_pool_pre_cleanup_register(stream->pool, &h->stream, bucket_cleanup);
}
return b;
}
static void bucket_destroy(void *data)
{
h2_bucket_eos *h = data;
if (apr_bucket_shared_destroy(h)) {
h2_stream *stream = h->stream;
if (stream && stream->pool) {
apr_pool_cleanup_kill(stream->pool, &h->stream, bucket_cleanup);
}
apr_bucket_free(h);
if (stream) {
h2_stream_dispatch(stream, H2_SEV_EOS_SENT);
}
}
}
const apr_bucket_type_t h2_bucket_type_eos = {
"H2EOS", 5, APR_BUCKET_METADATA,
bucket_destroy,
bucket_read,
apr_bucket_setaside_noop,
apr_bucket_split_notimpl,
apr_bucket_shared_copy
};