/* 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 "httpd.h"

#include "http_request.h"

#include "http_protocol.h"

#include "scoreboard.h"

typedef struct {

    apr_bucket_refcount refcount;

    request_rec *r;

} ap_bucket_eor;

static apr_status_t eor_bucket_cleanup(void *data)

{

    request_rec **rp = data;

    if (*rp) {

        request_rec *r = *rp;

        /*

         * If eor_bucket_destroy is called after us, this prevents

         * eor_bucket_destroy from trying to destroy the pool again.

         */

        *rp = NULL;

        /* Update child status and log the transaction */

        ap_update_child_status(r->connection->sbh, SERVER_BUSY_LOG, r);

        ap_run_log_transaction(r);

        if (ap_extended_status) {

            ap_increment_counts(r->connection->sbh, r);

        }

    }

    return APR_SUCCESS;

}

static apr_status_t eor_bucket_read(apr_bucket *b, const char **str,

                                    apr_size_t *len, apr_read_type_e block)

{

    *str = NULL;

    *len = 0;

    return APR_SUCCESS;

}

AP_DECLARE(apr_bucket *) ap_bucket_eor_make(apr_bucket *b, request_rec *r)

{

    ap_bucket_eor *h;

    h = apr_bucket_alloc(sizeof(*h), b->list);

    h->r = r;

    b = apr_bucket_shared_make(b, h, 0, 0);

    b->type = &ap_bucket_type_eor;

    return b;

}

AP_DECLARE(apr_bucket *) ap_bucket_eor_create(apr_bucket_alloc_t *list,

                                              request_rec *r)

{

    apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);

    APR_BUCKET_INIT(b);

    b->free = apr_bucket_free;

    b->list = list;

    b = ap_bucket_eor_make(b, r);

    if (r) {

        ap_bucket_eor *h = b->data;

        /*

         * Register a cleanup for the request pool as the eor bucket could

         * have been allocated from a different pool then the request pool

         * e.g. the parent pool of the request pool. In this case

         * eor_bucket_destroy might be called at a point of time when the

         * request pool had been already destroyed.

         * We need to use a pre-cleanup here because a module may create a

         * sub-pool which is still needed during the log_transaction hook.

         */

        apr_pool_pre_cleanup_register(r->pool, &h->r, eor_bucket_cleanup);

    }

    return b;

}

AP_DECLARE(request_rec *) ap_bucket_eor_request(apr_bucket *b)

{

    ap_bucket_eor *h = b->data;

    AP_DEBUG_ASSERT(AP_BUCKET_IS_EOR(b));

    return h->r;

}

static void eor_bucket_destroy(void *data)

{

    ap_bucket_eor *h = data;

    if (apr_bucket_shared_destroy(h)) {

        request_rec *r = h->r;

        if (r) {

            /* eor_bucket_cleanup will be called when the pool gets destroyed */

            apr_pool_destroy(r->pool);

        }

        apr_bucket_free(h);

    }

}

AP_DECLARE_DATA const apr_bucket_type_t ap_bucket_type_eor = {

    "EOR", 5, APR_BUCKET_METADATA,

    eor_bucket_destroy,

    eor_bucket_read,

    apr_bucket_setaside_noop,

    apr_bucket_split_notimpl,

    apr_bucket_shared_copy

};