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/* ====================================================================
* Copyright (c) 1999 The Apache Group. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
* EXPRESSED 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 APACHE GROUP OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Group.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
#include "apr_general.h"
#include "apr_errno.h"
#include "apr_pools.h"
#include "misc.h"
#include <pthread.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
/* ***APRDOC********************************************************
* ap_status_t ap_create_context(ap_context_t *, ap_context_t **)
* Create a new context.
* arg 1) The parent context. If this is NULL, the new context is a root
* context. If it is non-NULL, the new context will inherit all
* of it's parent context's attributes, except the ap_context_t will be a
* sub-pool.
* arg 2) The context we have just created.
*/
ap_status_t ap_create_context(struct context_t *cont, struct context_t **newcont)
{
struct context_t *new;
ap_pool_t *pool;
if (cont) {
pool = ap_make_sub_pool(cont->pool);
}
else {
pool = ap_init_alloc();;
}
if (pool == NULL) {
return APR_ENOPOOL;
}
if (cont) {
new = (struct context_t *)ap_palloc(cont, sizeof(struct context_t));
}
else {
new = (struct context_t *)malloc(sizeof(struct context_t));
}
new->pool = pool;
new->prog_data = NULL;
*newcont = new;
return APR_SUCCESS;
}
/* ***APRDOC********************************************************
* ap_status_t ap_destroy_context(ap_context_t *)
* Free the context and all of it's child contexts'.
* arg 1) The context to free.
*/
ap_status_t ap_destroy_context(struct context_t *cont)
{
ap_destroy_pool(cont);
return APR_SUCCESS;
}
/* ***APRDOC********************************************************
* ap_status_t ap_set_userdata(ap_context_t *, void *, char *,
ap_status_t (*cleanup) (void *))
* Set the data associated with the current context.
* arg 1) The current context.
* arg 2) The user data associated with the context.
* arg 3) The key to use for association
* arg 4) The cleanup program to use to cleanup the data;
* NOTE: The data to be attached to the context should have the same
* life span as the context it is being attached to.
*
* Users of APR must take EXTREME care when choosing a key to
* use for their data. It is possible to accidentally overwrite
* data by choosing a key that another part of the program is using
* It is advised that steps are taken to ensure that a unique
* key is used at all times.
*/
ap_status_t ap_set_userdata(struct context_t *cont, void *data, char *key,
ap_status_t (*cleanup) (void *))
{
datastruct *dptr = NULL, *dptr2 = NULL;
if (cont) {
dptr = cont->prog_data;
while (dptr) {
if (!strcmp(dptr->key, key))
break;
dptr2 = dptr;
dptr = dptr->next;
}
if (dptr == NULL) {
dptr = ap_palloc(cont, sizeof(datastruct));
dptr->next = dptr->prev = NULL;
dptr->key = strdup(key);
if (dptr2) {
dptr2->next = dptr;
dptr->prev = dptr2;
}
else {
cont->prog_data = dptr;
}
}
dptr->data = data;
ap_register_cleanup(cont, dptr->data, cleanup, cleanup);
return APR_SUCCESS;
}
return APR_ENOCONT;
}
/* ***APRDOC********************************************************
* ap_status_t ap_get_userdata(ap_context_t *, void **)
* Return the data associated with the current context.
* arg 1) The current context.
* arg 2) The key for the data to retrieve
* arg 3) The user data associated with the context.
*/
ap_status_t ap_get_userdata(struct context_t *cont, char *key, void **data)
{
datastruct *dptr = NULL;
if (cont) {
dptr = cont->prog_data;
while (dptr) {
if (!strcmp(dptr->key, key)) {
break;
}
dptr = dptr->next;
}
if (dptr) {
(*data) = dptr->data;
}
else {
(*data) = NULL;
}
return APR_SUCCESS;
}
return APR_ENOCONT;
}
/* ***APRDOC********************************************************
* ap_status_t ap_initialize()
* Setup any APR internal data structures. This MUST be the first
* function called for any APR program.
*/
ap_status_t ap_initialize(void)
{
#ifdef HAVE_PTHREAD_SIGMASK
sigset_t sigset;
sigfillset(&sigset);
pthread_sigmask(SIG_BLOCK, &sigset, NULL);
#endif
return APR_SUCCESS;
}
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