1 files changed, 190 insertions, 0 deletions
diff --git a/plugins/imrelp/imrelp.c b/plugins/imrelp/imrelp.c
new file mode 100644
index 00000000..b7308016
--- /dev/null
+++ b/plugins/imrelp/imrelp.c
@@ -0,0 +1,190 @@
+/* imrelp.c
+ *
+ * This is the implementation of the RELP input module.
+ *
+ * File begun on 2008-03-13 by RGerhards
+ *
+ * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of rsyslog.
+ *
+ * Rsyslog is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Rsyslog is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Rsyslog.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <librelp.h>
+#include "rsyslog.h"
+#include "syslogd.h"
+#include "cfsysline.h"
+#include "module-template.h"
+#include "net.h"
+
+MODULE_TYPE_INPUT
+
+/* static data */
+DEF_IMOD_STATIC_DATA
+DEFobjCurrIf(net)
+
+/* Module static data */
+static relpEngine_t *pRelpEngine;	/* our relp engine */
+
+
+/* config settings */
+static int iTCPSessMax = 200; /* max number of sessions */
+
+
+/* ------------------------------ callbacks ------------------------------ */
+#if 0
+/* this shall go into a specific ACL module! */
+static int
+isPermittedHost(struct sockaddr *addr, char *fromHostFQDN, void __attribute__((unused)) *pUsrSrv,
+	        void __attribute__((unused)) *pUsrSess)
+{
+	return net.isAllowedSender(net.pAllowedSenders_TCP, addr, fromHostFQDN);
+}
+
+#endif // #if 0
+
+/* callback for receiving syslog messages. This function is invoked from the
+ * RELP engine when a syslog message arrived. It must return a relpRetVal,
+ * with anything else but RELP_RET_OK terminating the relp session. Please note
+ * that RELP_RET_OK is equal to RS_RET_OK and the other libRELP error codes
+ * are different from our rsRetVal. So we can simply use our own iRet system
+ * to fulfill the requirement.
+ * rgerhards, 2008-03-21
+ */
+static relpRetVal
+onSyslogRcv(uchar *pHostname, uchar __attribute__((unused)) *pIP, uchar *pMsg, size_t lenMsg)
+{
+	DEFiRet;
+	parseAndSubmitMessage((char*)pHostname, (char*)pMsg, lenMsg, MSG_PARSE_HOSTNAME,
+			      NOFLAG, eFLOWCTL_LIGHT_DELAY);
+
+	RETiRet;
+}
+
+
+/* ------------------------------ end callbacks ------------------------------ */
+
+
+static rsRetVal addListener(void __attribute__((unused)) *pVal, uchar *pNewVal)
+{
+	DEFiRet;
+	if(pRelpEngine == NULL) {
+		CHKiRet(relpEngineConstruct(&pRelpEngine));
+		CHKiRet(relpEngineSetDbgprint(pRelpEngine, dbgprintf));
+		CHKiRet(relpEngineSetEnableCmd(pRelpEngine, (uchar*) "syslog", eRelpCmdState_Required));
+		CHKiRet(relpEngineSetSyslogRcv(pRelpEngine, onSyslogRcv));
+	}
+
+	CHKiRet(relpEngineAddListner(pRelpEngine, pNewVal));
+
+	free(pNewVal); /* we do no longer need it */
+
+finalize_it:
+	RETiRet;
+}
+
+/* This function is called to gather input.
+ */
+BEGINrunInput
+CODESTARTrunInput
+	/* TODO: we must be careful to start the listener here. Currently, tcpsrv.c seems to
+	 * do that in ConstructFinalize
+	 */
+	iRet = relpEngineRun(pRelpEngine);
+ENDrunInput
+
+
+/* initialize and return if will run or not */
+BEGINwillRun
+CODESTARTwillRun
+	/* first apply some config settings */
+	//net.PrintAllowedSenders(2); /* TCP */
+	if(pRelpEngine == NULL)
+		ABORT_FINALIZE(RS_RET_NO_RUN);
+finalize_it:
+ENDwillRun
+
+
+BEGINafterRun
+CODESTARTafterRun
+	/* do cleanup here */
+#if 0
+	if(net.pAllowedSenders_TCP != NULL) {
+		net.clearAllowedSenders(net.pAllowedSenders_TCP);
+		net.pAllowedSenders_TCP = NULL;
+	}
+#endif
+ENDafterRun
+
+
+BEGINmodExit
+CODESTARTmodExit
+	if(pRelpEngine != NULL)
+		iRet = relpEngineDestruct(&pRelpEngine);
+
+	/* release objects we used */
+	objRelease(net, LM_NET_FILENAME);
+ENDmodExit
+
+
+static rsRetVal
+resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal)
+{
+	iTCPSessMax = 200;
+	return RS_RET_OK;
+}
+
+
+
+BEGINqueryEtryPt
+CODESTARTqueryEtryPt
+CODEqueryEtryPt_STD_IMOD_QUERIES
+ENDqueryEtryPt
+
+
+BEGINmodInit()
+CODESTARTmodInit
+	*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
+CODEmodInit_QueryRegCFSLineHdlr
+	pRelpEngine = NULL;
+	/* request objects we use */
+	CHKiRet(objUse(net, LM_NET_FILENAME));
+
+	/* register config file handlers */
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrelpserverrun", 0, eCmdHdlrGetWord,
+				   addListener, NULL, STD_LOADABLE_MODULE_ID));
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrelpmaxsessions", 0, eCmdHdlrInt,
+				   NULL, &iTCPSessMax, STD_LOADABLE_MODULE_ID));
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler,
+		resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID));
+ENDmodInit
+
+
+/* vim:set ai:
+ */