mirror of
https://github.com/rsyslog/rsyslog.git
synced 2025-12-17 17:30:42 +01:00
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
/* The zlibwrap object.
|
|
*
|
|
* This is an rsyslog object wrapper around zlib.
|
|
*
|
|
* Copyright 2009-2012 Rainer Gerhards and Adiscon GmbH.
|
|
*
|
|
* This file is part of the rsyslog runtime library.
|
|
*
|
|
* Licensed 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
|
|
* -or-
|
|
* see COPYING.ASL20 in the source distribution
|
|
*
|
|
* 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 "config.h"
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <zlib.h>
|
|
|
|
#include "rsyslog.h"
|
|
#include "module-template.h"
|
|
#include "obj.h"
|
|
#include "zlibw.h"
|
|
|
|
MODULE_TYPE_LIB
|
|
MODULE_TYPE_NOKEEP
|
|
|
|
/* static data */
|
|
DEFobjStaticHelpers
|
|
|
|
|
|
/* ------------------------------ methods ------------------------------ */
|
|
|
|
/* zlib make strong use of macros for its interface functions, so we can not simply
|
|
* pass function pointers to them. Instead, we create very small wrappers which call
|
|
* the relevant entry points.
|
|
*/
|
|
|
|
static int myDeflateInit(z_streamp strm, int level)
|
|
{
|
|
return deflateInit(strm, level);
|
|
}
|
|
|
|
static int myDeflateInit2(z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy)
|
|
{
|
|
return deflateInit2(strm, level, method, windowBits, memLevel, strategy);
|
|
}
|
|
|
|
static int myDeflateEnd(z_streamp strm)
|
|
{
|
|
return deflateEnd(strm);
|
|
}
|
|
|
|
static int myDeflate(z_streamp strm, int flush)
|
|
{
|
|
return deflate(strm, flush);
|
|
}
|
|
|
|
|
|
/* queryInterface function
|
|
* rgerhards, 2008-03-05
|
|
*/
|
|
BEGINobjQueryInterface(zlibw)
|
|
CODESTARTobjQueryInterface(zlibw)
|
|
if(pIf->ifVersion != zlibwCURR_IF_VERSION) { /* check for current version, increment on each change */
|
|
ABORT_FINALIZE(RS_RET_INTERFACE_NOT_SUPPORTED);
|
|
}
|
|
|
|
/* ok, we have the right interface, so let's fill it
|
|
* Please note that we may also do some backwards-compatibility
|
|
* work here (if we can support an older interface version - that,
|
|
* of course, also affects the "if" above).
|
|
*/
|
|
pIf->DeflateInit = myDeflateInit;
|
|
pIf->DeflateInit2 = myDeflateInit2;
|
|
pIf->Deflate = myDeflate;
|
|
pIf->DeflateEnd = myDeflateEnd;
|
|
finalize_it:
|
|
ENDobjQueryInterface(zlibw)
|
|
|
|
|
|
/* Initialize the zlibw class. Must be called as the very first method
|
|
* before anything else is called inside this class.
|
|
* rgerhards, 2008-02-19
|
|
*/
|
|
BEGINAbstractObjClassInit(zlibw, 1, OBJ_IS_LOADABLE_MODULE) /* class, version */
|
|
/* request objects we use */
|
|
|
|
/* set our own handlers */
|
|
ENDObjClassInit(zlibw)
|
|
|
|
|
|
/* --------------- here now comes the plumbing that makes as a library module --------------- */
|
|
|
|
|
|
BEGINmodExit
|
|
CODESTARTmodExit
|
|
ENDmodExit
|
|
|
|
|
|
BEGINqueryEtryPt
|
|
CODESTARTqueryEtryPt
|
|
CODEqueryEtryPt_STD_LIB_QUERIES
|
|
ENDqueryEtryPt
|
|
|
|
|
|
BEGINmodInit()
|
|
CODESTARTmodInit
|
|
*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
|
|
|
|
CHKiRet(zlibwClassInit(pModInfo)); /* must be done after tcps_sess, as we use it */
|
|
/* Initialize all classes that are in our module - this includes ourselfs */
|
|
ENDmodInit
|
|
/* vi:set ai:
|
|
*/
|