mod_cache.c revision b99dbaab171d91e1b664397cc40e039d0c087c65
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 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
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*
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* distribution.
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* 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.
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* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
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* 5. Products derived from this software may not be called "Apache",
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* 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/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
#include "apr_strings.h"
#include "ap_config.h"
#include "util_filter.h"
#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_log.h"
#include "http_main.h"
#include "util_script.h"
#include "http_core.h"
#include "mod_cache.h"
#include "apr_hooks.h"
module MODULE_VAR_EXPORT cache_module;
APR_HOOK_STRUCT(
APR_HOOK_LINK(serve_cache)
APR_HOOK_LINK(store_cache)
)
AP_IMPLEMENT_HOOK_RUN_FIRST(int,serve_cache,(request_rec *r),(r),DECLINED)
AP_IMPLEMENT_HOOK_RUN_FIRST(int,store_cache,(request_rec *r, apr_bucket_brigade *bb, void **cf),
(r, bb, cf),DECLINED)
static int cache_handler(request_rec *r)
{
/* I am sure there is common error checking that belongs in this function,
* but I'm not sure what it is.
*/
return ap_run_serve_cache(r);
}
typedef struct cache_struct {
void *cf;
} cache_struct;
static int cache_filter(ap_filter_t *f, apr_bucket_brigade *bb)
{
cache_struct *ctx = f->ctx;
if (ctx == NULL) {
f->ctx = ctx = apr_pcalloc(f->r->pool, sizeof(*ctx));
}
ap_run_store_cache(f->r, bb, &ctx->cf);
ap_pass_brigade(f->next, bb);
return APR_SUCCESS;
}
static void cache_register_hook(apr_pool_t *p)
{
ap_register_output_filter("CACHE", cache_filter, AP_FTYPE_HTTP_HEADER);
}
static const handler_rec cache_handlers[] =
{
{"*/*", cache_handler},
{NULL}
};
module MODULE_VAR_EXPORT cache_module = {
STANDARD20_MODULE_STUFF,
NULL, /* create per-directory config structure */
NULL, /* merge per-directory config structures */
NULL, /* create per-server config structure */
NULL, /* merge per-server config structures */
NULL, /* command apr_table_t */
cache_handlers, /* handlers */
cache_register_hook /* register hooks */
};