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Diffstat (limited to 'plugins/im3195/im3195.c')
| -rw-r--r-- | plugins/im3195/im3195.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/plugins/im3195/im3195.c b/plugins/im3195/im3195.c new file mode 100644 index 0000000..e8ee143 --- /dev/null +++ b/plugins/im3195/im3195.c @@ -0,0 +1,216 @@ +/** + * The rfc3195 input module. + * + * Please note that this file replaces the rfc3195d daemon that was + * also present in pre-v3 versions of rsyslog. + * + * WARNING: due to no demand at all for RFC3195, we have converted rfc3195d + * to this input module, but we have NOT conducted any testing. Also, + * the module does not yet properly handle the recovery case. If someone + * intends to put this module into production, good testing should be + * made and it also is a good idea to notify me that you intend to use + * it in production. In this case, I'll probably give the module another + * cleanup. I don't do this now because so far it looks just like a big + * waste of time. -- rgerhards, 2008-04-16 + * + * \author Rainer Gerhards <rgerhards@adiscon.com> + * + * Copyright (C) 2003-2018 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * 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 <stdio.h> +#include <unistd.h> +#include <sys/errno.h> +#include <assert.h> +#include "rsyslog.h" +#include "dirty.h" +#include "liblogging/liblogging.h" +#include "liblogging/srAPI.h" +#include "liblogging/syslogmessage.h" +#include "module-template.h" +#include "cfsysline.h" +#include "msg.h" +#include "errmsg.h" +#include "unicode-helper.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(prop) + +/* configuration settings */ + +struct modConfData_s { + EMPTY_STRUCT; +}; + +static int listenPort = 601; + +/* we use a global API object below, because this listener is + * not very complex. As such, this hack should not harm anything. + * rgerhards, 2005-10-12 + */ +static srAPIObj* pAPI; + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this module */ + + +/* This method is called when a message has been fully received. + * It passes the received message to the rsyslog main message + * queue. Please note that this callback is synchronous, thus + * liblogging will be on hold until it returns. This is important + * to note because in an error case we might stay in this code + * for an extended amount of time. So far, we think this is the + * best solution, but real-world experience might tell us a + * different truth ;) + */ +#ifdef __GNUC__ +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif +static void OnReceive(srAPIObj __attribute__((unused)) *pMyAPI, srSLMGObj* pSLMG) +{ + uchar *pszRawMsg; + uchar *fromHost = (uchar*) "[unset]"; /* TODO: get hostname */ + uchar *fromHostIP = (uchar*) "[unset]"; /* TODO: get hostname */ + + srSLMGGetRawMSG(pSLMG, &pszRawMsg); + + parseAndSubmitMessage(fromHost, fromHostIP, pszRawMsg, strlen((char*)pszRawMsg), + PARSE_HOSTNAME, eFLOWCTL_FULL_DELAY, pInputName, NULL, 0, NULL); +} + + +#if 0 +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf +#endif + + +BEGINrunInput +CODESTARTrunInput + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework, + * right into the sleep below. + */ + while(!pThrd->bShallStop) { + /* now move the listener to running state. Control will only + * return after SIGUSR1. + */ + if((iRet = (rsRetVal) srAPIRunListener(pAPI)) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d running liblogging listener - im3195 " + "is defunct", iRet); + FINALIZE; /* this causes im3195 to become defunct; TODO: recovery handling */ + } + } +finalize_it: +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun + if((pAPI = srAPIInitLib()) == NULL) { + LogError(0, NO_ERRCODE, "error initializing liblogging - im3195 is defunct"); + ABORT_FINALIZE(RS_RET_ERR); + } + + if((iRet = (rsRetVal) srAPISetOption(pAPI, srOPTION_BEEP_LISTENPORT, listenPort)) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d setting liblogging listen port - im3195 is defunct", iRet); + FINALIZE; + } + + if((iRet = (rsRetVal) srAPISetupListener(pAPI, OnReceive)) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d setting up liblogging listener - im3195 is defunct", iRet); + FINALIZE; + } + +finalize_it: +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + dbgprintf("Shutting down rfc3195d. Be patient, this can take up to 30 seconds...\n"); + srAPIShutdownListener(pAPI); +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + srAPIExitLib(pAPI); /* terminate liblogging */ + /* global variable cleanup */ + if(pInputName != NULL) + prop.Destruct(&pInputName); + /* release objects we used */ + objRelease(prop, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + listenPort = 601; + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(prop, CORE_COMPONENT)); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"input3195listenport", 0, eCmdHdlrInt, NULL, &listenPort, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("im3195"), sizeof("im3195") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); + +ENDmodInit |