liveprop.c revision 0946f90438dcf29a5fe5d9e21559b3b9d640bc12
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" 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",
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* 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 Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "apr_pools.h"
#include "apr_hash.h"
#include "apr_errno.h"
#include "apr_strings.h"
#include "util_xml.h" /* for apr_text_header */
#include "mod_dav.h"
static apr_hash_t *dav_liveprop_uris = NULL;
static int dav_liveprop_count = 0;
static apr_status_t dav_cleanup_liveprops(void *ctx)
{
dav_liveprop_uris = NULL;
dav_liveprop_count = 0;
return APR_SUCCESS;
}
static void dav_register_liveprop_namespace(apr_pool_t *p, const char *uri)
{
int value;
if (dav_liveprop_uris == NULL) {
dav_liveprop_uris = apr_hash_make(p);
apr_pool_cleanup_register(p, NULL, dav_cleanup_liveprops, apr_pool_cleanup_null);
}
value = (int)apr_hash_get(dav_liveprop_uris, uri, APR_HASH_KEY_STRING);
if (value != 0) {
/* already registered */
return;
}
/* start at 1, and count up */
apr_hash_set(dav_liveprop_uris, uri, APR_HASH_KEY_STRING,
(void *)++dav_liveprop_count);
}
DAV_DECLARE(int) dav_get_liveprop_ns_index(const char *uri)
{
return (int)apr_hash_get(dav_liveprop_uris, uri, APR_HASH_KEY_STRING);
}
int dav_get_liveprop_ns_count(void)
{
return dav_liveprop_count;
}
void dav_add_all_liveprop_xmlns(apr_pool_t *p, apr_text_header *phdr)
{
apr_hash_index_t *idx = apr_hash_first(p, dav_liveprop_uris);
for ( ; idx != NULL; idx = apr_hash_next(idx) ) {
const void *key;
void *val;
const char *s;
apr_hash_this(idx, &key, NULL, &val);
s = apr_psprintf(p, " xmlns:lp%d=\"%s\"", (int)val, (const char *)key);
apr_text_append(p, phdr, s);
}
}
DAV_DECLARE(int) dav_do_find_liveprop(const char *ns_uri, const char *name,
const dav_liveprop_group *group,
const dav_hooks_liveprop **hooks)
{
const char * const *uris = group->namespace_uris;
const dav_liveprop_spec *scan;
int ns;
/* first: locate the namespace in the namespace table */
for (ns = 0; uris[ns] != NULL; ++ns)
if (strcmp(ns_uri, uris[ns]) == 0)
break;
if (uris[ns] == NULL) {
/* not our property (the namespace matched none of ours) */
return 0;
}
/* second: look for the property in the liveprop specs */
for (scan = group->specs; scan->name != NULL; ++scan)
if (ns == scan->ns && strcmp(name, scan->name) == 0) {
*hooks = group->hooks;
return scan->propid;
}
/* not our property (same namespace, but no matching prop name) */
return 0;
}
DAV_DECLARE(int) dav_get_liveprop_info(int propid,
const dav_liveprop_group *group,
const dav_liveprop_spec **info)
{
const dav_liveprop_spec *scan;
for (scan = group->specs; scan->name != NULL; ++scan) {
if (scan->propid == propid) {
*info = scan;
/* map the provider-local NS into a global NS index */
return dav_get_liveprop_ns_index(group->namespace_uris[scan->ns]);
}
}
/* assert: should not reach this point */
*info = NULL;
return 0;
}
DAV_DECLARE(void) dav_register_liveprop_group(apr_pool_t *p,
const dav_liveprop_group *group)
{
/* register the namespace URIs */
const char * const * uris = group->namespace_uris;
for ( ; *uris != NULL; ++uris) {
dav_register_liveprop_namespace(p, *uris);
}
}