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https://github.com/rsyslog/rsyslog.git
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60309004df
- added the ability to specify an error log function for the runtime - removed dependency of core runtime on dirty.h Note that it is "better" modularity, not perfect. There is still work to do, but I think we can for the time being proceed with other things.
130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/* The errmsg object.
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*
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* Module begun 2008-03-05 by Rainer Gerhards, based on some code
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* from syslogd.c. I converted this module to lgpl and have checked that
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* all contributors agreed to that step.
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*
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* Copyright 2008 Rainer Gerhards and Adiscon GmbH.
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*
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* This file is part of the rsyslog runtime library.
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*
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* The rsyslog runtime library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* The rsyslog runtime library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the rsyslog runtime library. If not, see <http://www.gnu.org/licenses/>.
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*
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* A copy of the GPL can be found in the file "COPYING" in this distribution.
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* A copy of the LGPL can be found in the file "COPYING.LESSER" in this distribution.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <assert.h>
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#include "rsyslog.h"
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#include "obj.h"
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#include "errmsg.h"
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#include "sysvar.h"
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#include "srUtils.h"
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#include "stringbuf.h"
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/* static data */
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DEFobjStaticHelpers
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/* ------------------------------ methods ------------------------------ */
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/* TODO: restructure this code some time. Especially look if we need
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* to check errno and, if so, how to do that in a clean way.
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*/
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static void __attribute__((format(printf, 2, 3)))
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LogError(int __attribute__((unused)) iErrCode, char *fmt, ... )
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{
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va_list ap;
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char buf[1024];
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char msg[1024];
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char errStr[1024];
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size_t lenBuf;
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BEGINfunc
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assert(fmt != NULL);
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/* Format parameters */
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va_start(ap, fmt);
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lenBuf = vsnprintf(buf, sizeof(buf), fmt, ap);
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if(lenBuf >= sizeof(buf)) {
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/* if our buffer was too small, we simply truncate. */
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lenBuf--;
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}
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va_end(ap);
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/* Log the error now */
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buf[sizeof(buf)/sizeof(char) - 1] = '\0'; /* just to be on the safe side... */
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dbgprintf("Called LogError, msg: %s\n", buf);
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if (errno == 0) {
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snprintf(msg, sizeof(msg), "%s", buf);
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} else {
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rs_strerror_r(errno, errStr, sizeof(errStr));
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snprintf(msg, sizeof(msg), "%s: %s", buf, errStr);
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}
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msg[sizeof(msg)/sizeof(char) - 1] = '\0'; /* just to be on the safe side... */
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errno = 0;
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glblErrLogger((uchar*)msg);
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ENDfunc
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}
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/* queryInterface function
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* rgerhards, 2008-03-05
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*/
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BEGINobjQueryInterface(errmsg)
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CODESTARTobjQueryInterface(errmsg)
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if(pIf->ifVersion != errmsgCURR_IF_VERSION) { /* check for current version, increment on each change */
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ABORT_FINALIZE(RS_RET_INTERFACE_NOT_SUPPORTED);
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}
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/* ok, we have the right interface, so let's fill it
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* Please note that we may also do some backwards-compatibility
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* work here (if we can support an older interface version - that,
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* of course, also affects the "if" above).
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*/
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pIf->LogError = LogError;
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finalize_it:
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ENDobjQueryInterface(errmsg)
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/* Initialize the errmsg class. Must be called as the very first method
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* before anything else is called inside this class.
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* rgerhards, 2008-02-19
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*/
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BEGINAbstractObjClassInit(errmsg, 1, OBJ_IS_CORE_MODULE) /* class, version */
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/* request objects we use */
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/* set our own handlers */
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ENDObjClassInit(errmsg)
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/* Exit the class.
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* rgerhards, 2008-04-17
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*/
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BEGINObjClassExit(errmsg, OBJ_IS_CORE_MODULE) /* class, version */
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/* release objects we no longer need */
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ENDObjClassExit(errmsg)
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/* vi:set ai:
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*/
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