thought this module would be of use to people over here.
I'm currently using it to test mod-include.
what it does:
- parses incoming stream of bytes.
IF it finds a '^B' or a '^F' it will create a
new bucket at this point and will insert a flush bucket
(if you specify ^F)
why is this usefull:
- testing mod-include boundry conditions and other wierd &
wonderfull things with weird bucket sizes.
..Ian
/* ====================================================================
* 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
* 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
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* permission, please contact [EMAIL PROTECTED]
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* 5. Products derived from this software may not be called "Apache",
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* 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.
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*
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* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* (zlib functions gz_open and gzwrite)
*/
/*
* mod_bucketeer.c: split buckets whenever we find a control-char
*
* Written by Ian Holsman ([EMAIL PROTECTED])
*
*/
#include "httpd.h"
#include "http_config.h"
#include "http_log.h"
#include "apr_strings.h"
#include "apr_general.h"
#include "util_filter.h"
#include "apr_buckets.h"
#include "http_request.h"
static const char bucketeerFilterName[] = "BUCKETEER";
module AP_MODULE_DECLARE_DATA bucketeer_module;
typedef struct bucketeer_filter_config_t
{
char bucketdelimter;
char flushdelimiter;
} bucketeer_filter_config_t;
static void *create_bucketeer_server_config(apr_pool_t *p, server_rec *s)
{
bucketeer_filter_config_t *c = apr_pcalloc(p, sizeof *c);
c->bucketdelimter = 0x02; /* ^B */
c->flushdelimiter = 0x06; /* ^F */
return c;
}
typedef struct bucketeer_ctx_t
{
apr_bucket_brigade *bb;
} bucketeer_ctx_t;
static apr_status_t bucketeer_out_filter(ap_filter_t *f,
apr_bucket_brigade *bb)
{
apr_bucket *e;
request_rec *r = f->r;
bucketeer_ctx_t *ctx = f->ctx;
bucketeer_filter_config_t *c =
ap_get_module_config(r->server->module_config,
&bucketeer_module);
/* If we don't have a context, we need to ensure that it is okay to send
* the deflated content. If we have a context, that means we've done
* this before and we liked it.
* This could be not so nice if we always fail. But, if we succeed,
* we're in better shape.
*/
if (!ctx) {
if (strncmp(r->content_type, "text/", 5)) {
ap_remove_output_filter(f);
return ap_pass_brigade(f->next, bb);
}
/* We're cool with filtering this. */
ctx = f->ctx = apr_pcalloc(f->r->pool, sizeof(*ctx));
ctx->bb = apr_brigade_create(f->r->pool);
}
APR_BRIGADE_FOREACH(e, bb) {
const char *data;
apr_size_t len;
int done = 0;
apr_size_t i;
apr_size_t lastpos;
if (APR_BUCKET_IS_EOS(e)) {
APR_BUCKET_REMOVE(e);
APR_BRIGADE_INSERT_TAIL(ctx->bb, e);
/* Okay, we've seen the EOS.
* Time to pass it along down the chain.
*/
return ap_pass_brigade(f->next, ctx->bb);
}
if (APR_BUCKET_IS_FLUSH(e)) {
/*
* Ignore flush buckets for the moment..
* we decide what to stream
*/
continue;
}
/* read */
apr_bucket_read(e, &data, &len, APR_BLOCK_READ);
if (len>0) {
lastpos=0;
for (i=0; i<len;i++) {
if ( data[i] == c->flushdelimiter ) {
apr_bucket *p;
if ( i-lastpos-1>0) {
p = apr_bucket_pool_create(apr_pmemdup( f->r->pool,
&data[lastpos],
i-lastpos),
i-lastpos,
f->r->pool);
APR_BRIGADE_INSERT_TAIL(ctx->bb,p);
}
lastpos=i+1;
p = apr_bucket_flush_create();
APR_BRIGADE_INSERT_TAIL(ctx->bb,p);
}
else {
if (data[i] == c->bucketdelimter) {
apr_bucket *p;
if ( i-lastpos-1>0) {
p = apr_bucket_pool_create(apr_pmemdup( f->r->pool,
&data[lastpos],
i-lastpos),
i-lastpos,
f->r->pool);
APR_BRIGADE_INSERT_TAIL(ctx->bb,p);
}
lastpos=i+1;
}
}
}
/* XXX: really should append this to the next 'real' bucket */
if ( lastpos < i ) {
apr_bucket *p;
p = apr_bucket_pool_create(apr_pmemdup(
f->r->pool,&data[lastpos],i-lastpos),i-lastpos,f->r->pool);
lastpos=i;
APR_BRIGADE_INSERT_TAIL(ctx->bb,p);
}
}
}
return APR_SUCCESS;
}
static void register_hooks(apr_pool_t * p)
{
ap_register_output_filter(bucketeerFilterName, bucketeer_out_filter,
AP_FTYPE_CONTENT-1);
}
static const command_rec bucketeer_filter_cmds[] = {
{NULL}
};
module AP_MODULE_DECLARE_DATA bucketeer_module = {
STANDARD20_MODULE_STUFF,
NULL,
NULL,
create_bucketeer_server_config,
NULL,
bucketeer_filter_cmds,
register_hooks
};
