Adding upstream version 8.2402.0.upstream/8.2402.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 2230 insertions, 0 deletions

diff --git a/plugins/imudp/Makefile.am b/plugins/imudp/Makefile.am
new file mode 100644
index 0000000..32d3d86
--- /dev/null
+++ b/plugins/imudp/Makefile.am
@@ -0,0 +1,11 @@
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+
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+
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+endif
diff --git a/plugins/imudp/Makefile.in b/plugins/imudp/Makefile.in
new file mode 100644
index 0000000..5b94114
--- /dev/null
+++ b/plugins/imudp/Makefile.in
@@ -0,0 +1,800 @@
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+	  *config.status*) \
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+	  *) \
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+
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+
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+
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+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
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+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+	      $$unique; \
+	  fi; \
+	fi
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+
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+
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
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+
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+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
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+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
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+	done
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
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+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
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+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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+	uninstall-am uninstall-pkglibLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/plugins/imudp/imudp.c b/plugins/imudp/imudp.c
new file mode 100644
index 0000000..982f6c4
--- /dev/null
+++ b/plugins/imudp/imudp.c
@@ -0,0 +1,1419 @@
+/* imudp.c
+ * This is the implementation of the UDP input module.
+ *
+ * NOTE: read comments in module-template.h to understand how this file
+ *       works!
+ *
+ * Copyright 2007-2018 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 <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <pthread.h>
+#include <signal.h>
+#include <poll.h>
+#ifdef HAVE_SYS_EPOLL_H
+#	include <sys/epoll.h>
+#endif
+#ifdef HAVE_SCHED_H
+#	include <sched.h>
+#endif
+#ifdef HAVE_SYS_PRCTL_H
+#  include <sys/prctl.h>
+#endif
+#include "rsyslog.h"
+#include "dirty.h"
+#include "net.h"
+#include "cfsysline.h"
+#include "module-template.h"
+#include "srUtils.h"
+#include "errmsg.h"
+#include "glbl.h"
+#include "msg.h"
+#include "parser.h"
+#include "datetime.h"
+#include "prop.h"
+#include "ruleset.h"
+#include "statsobj.h"
+#include "ratelimit.h"
+#include "unicode-helper.h"
+
+MODULE_TYPE_INPUT
+MODULE_TYPE_NOKEEP
+MODULE_CNFNAME("imudp")
+
+/* defines */
+#define MAX_WRKR_THREADS 32
+
+/* Module static data */
+DEF_IMOD_STATIC_DATA
+DEFobjCurrIf(glbl)
+DEFobjCurrIf(net)
+DEFobjCurrIf(datetime)
+DEFobjCurrIf(prop)
+DEFobjCurrIf(ruleset)
+DEFobjCurrIf(statsobj)
+
+
+static struct lstn_s {
+	struct lstn_s *next;
+	int sock;		/* socket */
+	ruleset_t *pRuleset;	/* bound ruleset */
+	prop_t *pInputName;
+	statsobj_t *stats;	/* listener stats */
+	ratelimit_t *ratelimiter;
+	uchar *dfltTZ;
+	STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit)
+	STATSCOUNTER_DEF(ctrDisallowed, mutCtrDisallowed)
+} *lcnfRoot = NULL, *lcnfLast = NULL;
+
+
+static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */
+static int bDoACLCheck;			/* are ACL checks neeed? Cached once immediately before listener startup */
+static int iMaxLine;			/* maximum UDP message size supported */
+#define BATCH_SIZE_DFLT 32		/* do not overdo, has heavy toll on memory, especially with large msgs */
+#define TIME_REQUERY_DFLT 2
+#define SCHED_PRIO_UNSET -12345678	/* a value that indicates that the scheduling priority has not been set */
+/* config vars for legacy config system */
+static struct configSettings_s {
+	uchar *pszBindAddr;		/* IP to bind socket to */
+	char  *pszBindDevice;		/* Device to bind socket to */
+	uchar *pszSchedPolicy;		/* scheduling policy string */
+	uchar *pszBindRuleset;		/* name of Ruleset to bind to */
+	int iSchedPrio;			/* scheduling priority */
+	int iTimeRequery;		/* how often is time to be queried inside tight recv loop? 0=always */
+} cs;
+
+struct instanceConf_s {
+	uchar *pszBindAddr;		/* IP to bind socket to */
+	char  *pszBindDevice;		/* Device to bind socket to */
+	uchar *pszBindPort;		/* Port to bind socket to */
+	uchar *pszBindRuleset;		/* name of ruleset to bind to */
+	uchar *inputname;
+	ruleset_t *pBindRuleset;	/* ruleset to bind listener to (use system default if unspecified) */
+	uchar *dfltTZ;
+	unsigned int ratelimitInterval;
+	unsigned int ratelimitBurst;
+	int rcvbuf;			/* 0 means: do not set, keep OS default */
+	/*  0 means:  IP_FREEBIND is disabled
+	1 means:  IP_FREEBIND enabled + warning disabled
+	1+ means: IP+FREEBIND enabled + warning enabled */
+	int ipfreebind;
+	struct instanceConf_s *next;
+	sbool bAppendPortToInpname;
+};
+
+/* The following structure controls the worker threads. Global data is
+ * needed for their access.
+ */
+static struct wrkrInfo_s {
+	pthread_t tid;	/* the worker's thread ID */
+	int id;
+	thrdInfo_t *pThrd;
+	statsobj_t *stats;	/* worker thread stats */
+	STATSCOUNTER_DEF(ctrCall_recvmmsg, mutCtrCall_recvmmsg)
+	STATSCOUNTER_DEF(ctrCall_recvmsg, mutCtrCall_recvmsg)
+	STATSCOUNTER_DEF(ctrMsgsRcvd, mutCtrMsgsRcvd)
+	uchar *pRcvBuf;		/* receive buffer (for a single packet) */
+#	ifdef HAVE_RECVMMSG
+	struct sockaddr_storage *frominet;
+	struct mmsghdr *recvmsg_mmh;
+	struct iovec *recvmsg_iov;
+#	endif
+} wrkrInfo[MAX_WRKR_THREADS];
+
+struct modConfData_s {
+	rsconf_t *pConf;		/* our overall config object */
+	instanceConf_t *root, *tail;
+	uchar *pszSchedPolicy;		/* scheduling policy string */
+	int iSchedPolicy;		/* scheduling policy as SCHED_xxx */
+	int iSchedPrio;			/* scheduling priority */
+	int iTimeRequery;		/* how often is time to be queried inside tight recv loop? 0=always */
+	int batchSize;			/* max nbr of input batch --> also recvmmsg() max count */
+	int8_t wrkrMax;			/* max nbr of worker threads */
+	sbool configSetViaV2Method;
+	sbool bPreserveCase;	/* preserves the case of fromhost; "off" by default */
+};
+static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */
+static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */
+
+/* module-global parameters */
+static struct cnfparamdescr modpdescr[] = {
+	{ "schedulingpolicy", eCmdHdlrGetWord, 0 },
+	{ "schedulingpriority", eCmdHdlrInt, 0 },
+	{ "batchsize", eCmdHdlrInt, 0 },
+	{ "threads", eCmdHdlrPositiveInt, 0 },
+	{ "timerequery", eCmdHdlrInt, 0 },
+	{ "preservecase", eCmdHdlrBinary, 0 }
+};
+static struct cnfparamblk modpblk =
+	{ CNFPARAMBLK_VERSION,
+	  sizeof(modpdescr)/sizeof(struct cnfparamdescr),
+	  modpdescr
+	};
+
+/* input instance parameters */
+static struct cnfparamdescr inppdescr[] = {
+	{ "port", eCmdHdlrArray, CNFPARAM_REQUIRED }, /* legacy: InputTCPServerRun */
+	{ "defaulttz", eCmdHdlrString, 0 },
+	{ "inputname", eCmdHdlrGetWord, 0 },
+	{ "inputname.appendport", eCmdHdlrBinary, 0 },
+	{ "name", eCmdHdlrGetWord, 0 },
+	{ "name.appendport", eCmdHdlrBinary, 0 },
+	{ "address", eCmdHdlrString, 0 },
+	{ "device", eCmdHdlrString, 0 },
+	{ "ratelimit.interval", eCmdHdlrInt, 0 },
+	{ "ratelimit.burst", eCmdHdlrInt, 0 },
+	{ "rcvbufsize", eCmdHdlrSize, 0 },
+	{ "ipfreebind", eCmdHdlrInt, 0 },
+	{ "ruleset", eCmdHdlrString, 0 }
+};
+static struct cnfparamblk inppblk =
+	{ CNFPARAMBLK_VERSION,
+	  sizeof(inppdescr)/sizeof(struct cnfparamdescr),
+	  inppdescr
+	};
+
+#include "im-helper.h" /* must be included AFTER the type definitions! */
+
+
+/* create input instance, set default parameters, and
+ * add it to the list of instances.
+ */
+static rsRetVal
+createInstance(instanceConf_t **pinst)
+{
+	instanceConf_t *inst;
+	DEFiRet;
+	CHKmalloc(inst = malloc(sizeof(instanceConf_t)));
+	inst->next = NULL;
+	inst->pBindRuleset = NULL;
+
+	inst->pszBindPort = NULL;
+	inst->pszBindAddr = NULL;
+	inst->pszBindDevice = NULL;
+	inst->pszBindRuleset = NULL;
+	inst->inputname = NULL;
+	inst->bAppendPortToInpname = 0;
+	inst->ratelimitBurst = 10000; /* arbitrary high limit */
+	inst->ratelimitInterval = 0; /* off */
+	inst->rcvbuf = 0;
+	inst->ipfreebind = IPFREEBIND_ENABLED_WITH_LOG;
+	inst->dfltTZ = NULL;
+
+	/* node created, let's add to config */
+	if(loadModConf->tail == NULL) {
+		loadModConf->tail = loadModConf->root = inst;
+	} else {
+		loadModConf->tail->next = inst;
+		loadModConf->tail = inst;
+	}
+
+	*pinst = inst;
+finalize_it:
+	RETiRet;
+}
+
+/* This function is called when a new listener instace shall be added to
+ * the current config object via the legacy config system. It just shuffles
+ * all parameters to the listener in-memory instance.
+ * rgerhards, 2011-05-04
+ */
+static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal)
+{
+	instanceConf_t *inst;
+	DEFiRet;
+
+	CHKiRet(createInstance(&inst));
+	CHKmalloc(inst->pszBindPort = ustrdup((pNewVal == NULL || *pNewVal == '\0')
+				 	       ? (uchar*) "514" : pNewVal));
+	if((cs.pszBindAddr == NULL) || (cs.pszBindAddr[0] == '\0')) {
+		inst->pszBindAddr = NULL;
+	} else {
+		CHKmalloc(inst->pszBindAddr = ustrdup(cs.pszBindAddr));
+	}
+	if((cs.pszBindDevice == NULL) || (cs.pszBindDevice[0] == '\0')) {
+		inst->pszBindDevice= NULL;
+	} else {
+		CHKmalloc(inst->pszBindDevice = strdup(cs.pszBindDevice));
+	}
+	if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) {
+		inst->pszBindRuleset = NULL;
+	} else {
+		CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset));
+	}
+
+finalize_it:
+	free(pNewVal);
+	RETiRet;
+}
+
+
+/* This function is called when a new listener shall be added. It takes
+ * the instance config description, tries to bind the socket and, if that
+ * succeeds, adds it to the list of existing listen sockets.
+ */
+static rsRetVal
+addListner(instanceConf_t *inst)
+{
+	DEFiRet;
+	uchar *bindAddr;
+	int *newSocks;
+	int iSrc;
+	struct lstn_s *newlcnfinfo;
+	uchar *bindName;
+	uchar *port;
+	uchar dispname[64], inpnameBuf[128];
+	uchar *inputname;
+
+	/* check which address to bind to. We could do this more compact, but have not
+	 * done so in order to make the code more readable. -- rgerhards, 2007-12-27
+	 */
+	if(inst->pszBindAddr == NULL)
+		bindAddr = NULL;
+	else if(inst->pszBindAddr[0] == '*' && inst->pszBindAddr[1] == '\0')
+		bindAddr = NULL;
+	else
+		bindAddr = inst->pszBindAddr;
+	bindName = (bindAddr == NULL) ? (uchar*)"*" : bindAddr;
+	port = (inst->pszBindPort == NULL || *inst->pszBindPort == '\0') ? (uchar*) "514" : inst->pszBindPort;
+
+	DBGPRINTF("Trying to open syslog UDP ports at %s:%s.\n", bindName, inst->pszBindPort);
+
+	newSocks = net.create_udp_socket(bindAddr, port, 1, inst->rcvbuf, 0, inst->ipfreebind, inst->pszBindDevice);
+	if(newSocks != NULL) {
+		/* we now need to add the new sockets to the existing set */
+		/* ready to copy */
+		for(iSrc = 1 ; iSrc <= newSocks[0] ; ++iSrc) {
+			struct sockaddr_in sa;
+			socklen_t salen = sizeof(sa);
+			const char *suffix;
+			CHKmalloc(newlcnfinfo = (struct lstn_s*) calloc(1, sizeof(struct lstn_s)));
+			newlcnfinfo->next = NULL;
+			newlcnfinfo->sock = newSocks[iSrc];
+			newlcnfinfo->pRuleset = inst->pBindRuleset;
+			newlcnfinfo->dfltTZ = inst->dfltTZ;
+			newlcnfinfo->ratelimiter = NULL;
+			/* query socket IPv4 vs IPv6 */
+			sa.sin_family = 0; /* just to keep CLANG static analyzer happy! */
+			if(getsockname(newlcnfinfo->sock, (struct sockaddr*) &sa, &salen) != 0) {
+				suffix = "error_getting_AF...";
+			} else {
+				if(sa.sin_family == AF_INET) {
+					suffix = "IPv4";
+				} else if(sa.sin_family == AF_INET6) {
+					suffix = "IPv6";
+				} else {
+					suffix = "AF_unknown";
+				}
+			}
+			if(inst->inputname == NULL) {
+				inputname = (uchar*)"imudp";
+			} else {
+				inputname = inst->inputname;
+			}
+			snprintf((char*)dispname, sizeof(dispname), "%s(%s/%s/%s)",
+				inputname, bindName, port, suffix);
+			dispname[sizeof(dispname)-1] = '\0'; /* just to be on the save side... */
+			CHKiRet(ratelimitNew(&newlcnfinfo->ratelimiter, (char*)dispname, NULL));
+			ratelimitSetLinuxLike(newlcnfinfo->ratelimiter, inst->ratelimitInterval,
+					      inst->ratelimitBurst);
+			ratelimitSetThreadSafe(newlcnfinfo->ratelimiter);
+			if(inst->bAppendPortToInpname) {
+				snprintf((char*)inpnameBuf, sizeof(inpnameBuf), "%s%s",
+					inputname, port);
+				inpnameBuf[sizeof(inpnameBuf)-1] = '\0';
+				inputname = inpnameBuf;
+			}
+			CHKiRet(prop.Construct(&newlcnfinfo->pInputName));
+			CHKiRet(prop.SetString(newlcnfinfo->pInputName,
+				inputname, ustrlen(inputname)));
+			CHKiRet(prop.ConstructFinalize(newlcnfinfo->pInputName));
+			/* support statistics gathering */
+			CHKiRet(statsobj.Construct(&(newlcnfinfo->stats)));
+			CHKiRet(statsobj.SetName(newlcnfinfo->stats, dispname));
+			CHKiRet(statsobj.SetOrigin(newlcnfinfo->stats, (uchar*)"imudp"));
+			STATSCOUNTER_INIT(newlcnfinfo->ctrSubmit, newlcnfinfo->mutCtrSubmit);
+			CHKiRet(statsobj.AddCounter(newlcnfinfo->stats, UCHAR_CONSTANT("submitted"),
+				ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(newlcnfinfo->ctrSubmit)));
+			STATSCOUNTER_INIT(newlcnfinfo->ctrDisallowed, newlcnfinfo->mutCtrDisallowed);
+			CHKiRet(statsobj.AddCounter(newlcnfinfo->stats, UCHAR_CONSTANT("disallowed"),
+				ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(newlcnfinfo->ctrDisallowed)));
+			CHKiRet(statsobj.ConstructFinalize(newlcnfinfo->stats));
+			/* link to list. Order must be preserved to take care for
+			 * conflicting matches.
+			 */
+			if(lcnfRoot == NULL)
+				lcnfRoot = newlcnfinfo;
+			if(lcnfLast == NULL)
+				lcnfLast = newlcnfinfo;
+			else {
+				lcnfLast->next = newlcnfinfo;
+				lcnfLast = newlcnfinfo;
+			}
+		}
+	} else {
+		LogError(0, NO_ERRCODE, "imudp: Could not create udp listener,"
+				" ignoring port %s bind-address %s.",
+				port, bindAddr);
+	}
+
+finalize_it:
+	if(iRet != RS_RET_OK) {
+		if(newlcnfinfo != NULL) {
+			if(newlcnfinfo->ratelimiter != NULL)
+				ratelimitDestruct(newlcnfinfo->ratelimiter);
+			if(newlcnfinfo->pInputName != NULL)
+				prop.Destruct(&newlcnfinfo->pInputName);
+			if(newlcnfinfo->stats != NULL)
+				statsobj.Destruct(&newlcnfinfo->stats);
+			free(newlcnfinfo);
+		}
+		/* close the rest of the open sockets as there's
+		   nowhere to put them */
+		for(; iSrc <= newSocks[0]; iSrc++) {
+			close(newSocks[iSrc]);
+		}
+	}
+
+	free(newSocks);
+	RETiRet;
+}
+
+
+static inline void
+std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst)
+{
+	LogError(0, NO_ERRCODE, "imudp: ruleset '%s' for %s:%s not found - "
+			"using default ruleset instead", inst->pszBindRuleset,
+			inst->pszBindAddr == NULL ? "*" : (char*) inst->pszBindAddr,
+			inst->pszBindPort);
+}
+
+
+/* This function processes received data. It provides unified handling
+ * in cases where recvmmsg() is available and not.
+ */
+static rsRetVal
+processPacket(struct lstn_s *lstn, struct sockaddr_storage *frominetPrev, int *pbIsPermitted,
+	uchar *rcvBuf, ssize_t lenRcvBuf, struct syslogTime *stTime, time_t ttGenTime,
+	struct sockaddr_storage *frominet, socklen_t socklen, multi_submit_t *multiSub)
+{
+	DEFiRet;
+	smsg_t *pMsg = NULL;
+
+	if(lenRcvBuf == 0)
+		FINALIZE; /* this looks a bit strange, but practice shows it happens... */
+
+	/* if we reach this point, we had a good receive and can process the packet received */
+	/* check if we have a different sender than before, if so, we need to query some new values */
+	if(bDoACLCheck) {
+		socklen = sizeof(struct sockaddr_storage);
+		if(net.CmpHost(frominet, frominetPrev, socklen) != 0) {
+			memcpy(frominetPrev, frominet, socklen); /* update cache indicator */
+			/* Here we check if a host is permitted to send us syslog messages. If it isn't,
+			 * we do not further process the message but log a warning (if we are
+			 * configured to do this). However, if the check would require name resolution,
+			 * it is postponed to the main queue. See also my blog post at
+			 * http://blog.gerhards.net/2009/11/acls-imudp-and-accepting-messages.html
+			 * rgerhards, 2009-11-16
+			 */
+			*pbIsPermitted = net.isAllowedSender2((uchar*)"UDP",
+					    (struct sockaddr *)frominet, "", 0);
+
+			if(*pbIsPermitted == 0) {
+				DBGPRINTF("msg is not from an allowed sender\n");
+				STATSCOUNTER_INC(lstn->ctrDisallowed, lstn->mutCtrDisallowed);
+				if(glbl.GetOptionDisallowWarning(runModConf->pConf)) {
+					LogError(0, NO_ERRCODE,
+						"imudp: UDP message from disallowed sender discarded");
+				}
+			}
+		}
+	} else {
+		*pbIsPermitted = 1; /* no check -> everything permitted */
+	}
+
+	DBGPRINTF("recv(%d,%d),acl:%d,msg:%.*s\n", lstn->sock, (int) lenRcvBuf, *pbIsPermitted,
+			(int)lenRcvBuf, rcvBuf);
+
+	if(*pbIsPermitted != 0)  {
+		/* we now create our own message object and submit it to the queue */
+		CHKiRet(msgConstructWithTime(&pMsg, stTime, ttGenTime));
+		MsgSetRawMsg(pMsg, (char*)rcvBuf, lenRcvBuf);
+		MsgSetInputName(pMsg, lstn->pInputName);
+		MsgSetRuleset(pMsg, lstn->pRuleset);
+		MsgSetFlowControlType(pMsg, eFLOWCTL_NO_DELAY);
+		if(lstn->dfltTZ != NULL)
+			MsgSetDfltTZ(pMsg, (char*) lstn->dfltTZ);
+		pMsg->msgFlags  = NEEDS_PARSING | PARSE_HOSTNAME | NEEDS_DNSRESOL;
+		if(*pbIsPermitted == 2) {
+			pMsg->msgFlags |= NEEDS_ACLCHK_U; /* request ACL check after resolution */
+		}
+		if(runModConf->bPreserveCase) {
+			pMsg->msgFlags |= PRESERVE_CASE; /* preserve case of fromhost */
+		}
+		CHKiRet(msgSetFromSockinfo(pMsg, frominet));
+		CHKiRet(ratelimitAddMsg(lstn->ratelimiter, multiSub, pMsg));
+		STATSCOUNTER_INC(lstn->ctrSubmit, lstn->mutCtrSubmit);
+	}
+
+finalize_it:
+	if(iRet != RS_RET_OK) {
+		if(pMsg != NULL && iRet != RS_RET_DISCARDMSG) {
+			msgDestruct(&pMsg);
+		}
+	}
+
+	RETiRet;
+}
+
+
+
+
+/* The following "two" functions are helpers to runInput. Actually, it is
+ * just one function. Depending on whether or not we have recvmmsg(),
+ * an appropriate version is compiled (as such we need to maintain both!).
+ */
+#ifdef HAVE_RECVMMSG
+static rsRetVal
+processSocket(struct wrkrInfo_s *pWrkr, struct lstn_s *lstn, struct sockaddr_storage *frominetPrev,
+int *pbIsPermitted)
+{
+	DEFiRet;
+	int iNbrTimeUsed;
+	time_t ttGenTime = 0; /* to avoid clang static analyzer false positive */
+		/* note: we do never use this time, because we always get a
+		 * requery below on first loop iteration */
+	struct syslogTime stTime;
+	char errStr[1024];
+	smsg_t *pMsgs[CONF_NUM_MULTISUB];
+	multi_submit_t multiSub;
+	int nelem;
+	int i;
+
+	multiSub.ppMsgs = pMsgs;
+	multiSub.maxElem = CONF_NUM_MULTISUB;
+	multiSub.nElem = 0;
+	iNbrTimeUsed = 0;
+	while(1) { /* loop is terminated if we have a "bad" receive, done below in the body */
+		if(pWrkr->pThrd->bShallStop == RSTRUE)
+			ABORT_FINALIZE(RS_RET_FORCE_TERM);
+		memset(pWrkr->recvmsg_iov, 0, runModConf->batchSize * sizeof(struct iovec));
+		memset(pWrkr->recvmsg_mmh, 0, runModConf->batchSize * sizeof(struct mmsghdr));
+		for(i = 0 ; i < runModConf->batchSize ; ++i) {
+			pWrkr->recvmsg_iov[i].iov_base = pWrkr->pRcvBuf+(i*(iMaxLine+1));
+			pWrkr->recvmsg_iov[i].iov_len = iMaxLine;
+			pWrkr->recvmsg_mmh[i].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage);
+			pWrkr->recvmsg_mmh[i].msg_hdr.msg_name = &(pWrkr->frominet[i]);
+			pWrkr->recvmsg_mmh[i].msg_hdr.msg_iov = &(pWrkr->recvmsg_iov[i]);
+			pWrkr->recvmsg_mmh[i].msg_hdr.msg_iovlen = 1;
+		}
+		nelem = recvmmsg(lstn->sock, pWrkr->recvmsg_mmh, runModConf->batchSize, 0, NULL);
+		STATSCOUNTER_INC(pWrkr->ctrCall_recvmmsg, pWrkr->mutCtrCall_recvmmsg);
+		DBGPRINTF("imudp: recvmmsg returned %d\n", nelem);
+		if(nelem < 0 && errno == ENOSYS) {
+			/* be careful: some versions of valgrind do not support recvmmsg()! */
+			DBGPRINTF("imudp: error ENOSYS on call to recvmmsg() - fall back to recvmsg\n");
+			nelem = recvmsg(lstn->sock, &(pWrkr->recvmsg_mmh[0].msg_hdr), 0);
+			STATSCOUNTER_INC(pWrkr->ctrCall_recvmsg, pWrkr->mutCtrCall_recvmsg);
+			if(nelem >= 0) {
+				pWrkr->recvmsg_mmh[0].msg_len = nelem;
+				nelem = 1;
+			}
+		}
+		if(nelem < 0) {
+			if(errno != EINTR && errno != EAGAIN) {
+				rs_strerror_r(errno, errStr, sizeof(errStr));
+				DBGPRINTF("INET socket error: %d = %s.\n", errno, errStr);
+				LogError(errno, NO_ERRCODE, "imudp: error receiving on socket: %s", errStr);
+			}
+			ABORT_FINALIZE(RS_RET_ERR);
+			// this most often is NOT an error, state is not checked by caller!
+		}
+
+		if((runModConf->iTimeRequery == 0) || (iNbrTimeUsed++ % runModConf->iTimeRequery) == 0) {
+			datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME);
+		}
+
+		pWrkr->ctrMsgsRcvd += nelem;
+		for(i = 0 ; i < nelem ; ++i) {
+			processPacket(lstn, frominetPrev, pbIsPermitted,
+				pWrkr->recvmsg_mmh[i].msg_hdr.msg_iov->iov_base,
+				pWrkr->recvmsg_mmh[i].msg_len, &stTime, ttGenTime, &(pWrkr->frominet[i]),
+				pWrkr->recvmsg_mmh[i].msg_hdr.msg_namelen, &multiSub);
+		}
+	}
+
+finalize_it:
+	multiSubmitFlush(&multiSub);
+	RETiRet;
+}
+#else /* we do not have recvmmsg() */
+/* This function is a helper to runInput. I have extracted it
+ * from the main loop just so that we do not have that large amount of code
+ * in a single place. This function takes a socket and pulls messages from
+ * it until the socket does not have any more waiting.
+ * rgerhards, 2008-01-08
+ * We try to read from the file descriptor until there
+ * is no more data. This is done in the hope to get better performance
+ * out of the system. However, this also means that a descriptor
+ * monopolizes processing while it contains data. This can lead to
+ * data loss in other descriptors. However, if the system is incapable of
+ * handling the workload, we will loss data in any case. So it doesn't really
+ * matter where the actual loss occurs - it is always random, because we depend
+ * on scheduling order. -- rgerhards, 2008-10-02
+ */
+static rsRetVal
+processSocket(struct wrkrInfo_s *pWrkr, struct lstn_s *lstn, struct sockaddr_storage *frominetPrev,
+int *pbIsPermitted)
+{
+	int iNbrTimeUsed;
+	time_t ttGenTime;
+	struct syslogTime stTime;
+	ssize_t lenRcvBuf;
+	struct sockaddr_storage frominet;
+	multi_submit_t multiSub;
+	smsg_t *pMsgs[CONF_NUM_MULTISUB];
+	char errStr[1024];
+	struct msghdr mh;
+	struct iovec iov[1];
+	DEFiRet;
+
+	multiSub.ppMsgs = pMsgs;
+	multiSub.maxElem = CONF_NUM_MULTISUB;
+	multiSub.nElem = 0;
+	iNbrTimeUsed = 0;
+	while(1) { /* loop is terminated if we have a bad receive, done below in the body */
+		if(pWrkr->pThrd->bShallStop == RSTRUE)
+			ABORT_FINALIZE(RS_RET_FORCE_TERM);
+		memset(iov, 0, sizeof(iov));
+		iov[0].iov_base = pWrkr->pRcvBuf;
+		iov[0].iov_len = iMaxLine;
+		memset(&mh, 0, sizeof(mh));
+		mh.msg_name = &frominet;
+		mh.msg_namelen = sizeof(struct sockaddr_storage);
+		mh.msg_iov = iov;
+		mh.msg_iovlen = 1;
+		lenRcvBuf = recvmsg(lstn->sock, &mh, 0);
+		STATSCOUNTER_INC(pWrkr->ctrCall_recvmsg, pWrkr->mutCtrCall_recvmsg);
+		if(lenRcvBuf < 0) {
+			if(errno != EINTR && errno != EAGAIN) {
+				rs_strerror_r(errno, errStr, sizeof(errStr));
+				DBGPRINTF("INET socket error: %d = %s.\n", errno, errStr);
+				LogError(errno, NO_ERRCODE, "imudp: error receiving on socket: %s", errStr);
+			}
+			ABORT_FINALIZE(RS_RET_ERR);
+			// this most often is NOT an error, state is not checked by caller!
+		}
+
+		++pWrkr->ctrMsgsRcvd;
+		if((runModConf->iTimeRequery == 0) || (iNbrTimeUsed++ % runModConf->iTimeRequery) == 0) {
+			datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME);
+		}
+
+		CHKiRet(processPacket(lstn, frominetPrev, pbIsPermitted, pWrkr->pRcvBuf, lenRcvBuf, &stTime,
+			ttGenTime, &frominet, mh.msg_namelen, &multiSub));
+	}
+
+
+finalize_it:
+	multiSubmitFlush(&multiSub);
+	RETiRet;
+}
+#endif /* #ifdef HAVE_RECVMMSG */
+
+
+/* check configured scheduling priority.
+ * Precondition: iSchedPolicy must have been set
+ */
+static rsRetVal
+checkSchedulingPriority(modConfData_t *modConf)
+{
+	DEFiRet;
+
+#ifdef HAVE_SCHED_GET_PRIORITY_MAX
+	if(   modConf->iSchedPrio < sched_get_priority_min(modConf->iSchedPolicy)
+	   || modConf->iSchedPrio > sched_get_priority_max(modConf->iSchedPolicy)) {
+		LogError(0, NO_ERRCODE,
+			"imudp: scheduling priority %d out of range (%d - %d)"
+			" for scheduling policy '%s' - ignoring settings",
+			modConf->iSchedPrio,
+			sched_get_priority_min(modConf->iSchedPolicy),
+			sched_get_priority_max(modConf->iSchedPolicy),
+			modConf->pszSchedPolicy);
+		ABORT_FINALIZE(RS_RET_VALIDATION_RUN);
+	}
+finalize_it:
+#endif
+	RETiRet;
+}
+
+
+/* check scheduling policy string and, if valid, set its
+ * numeric equivalent in current load config
+ */
+static rsRetVal
+checkSchedulingPolicy(modConfData_t *modConf)
+{
+	DEFiRet;
+
+	if (0) { /* trick to use conditional compilation */
+#ifdef SCHED_FIFO
+	} else if (!strcasecmp((char*)modConf->pszSchedPolicy, "fifo")) {
+		modConf->iSchedPolicy = SCHED_FIFO;
+#endif
+#ifdef SCHED_RR
+	} else if (!strcasecmp((char*)modConf->pszSchedPolicy, "rr")) {
+		modConf->iSchedPolicy = SCHED_RR;
+#endif
+#ifdef SCHED_OTHER
+	} else if (!strcasecmp((char*)modConf->pszSchedPolicy, "other")) {
+		modConf->iSchedPolicy = SCHED_OTHER;
+#endif
+	} else {
+		LogError(errno, NO_ERRCODE,
+			    "imudp: invalid scheduling policy '%s' "
+			    "- ignoring setting", modConf->pszSchedPolicy);
+		ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS);
+	}
+finalize_it:
+	RETiRet;
+}
+
+/* checks scheduling parameters during config check phase */
+static rsRetVal
+checkSchedParam(modConfData_t *modConf)
+{
+	DEFiRet;
+
+	if(modConf->pszSchedPolicy != NULL && modConf->iSchedPrio == SCHED_PRIO_UNSET) {
+		LogError(0, RS_RET_ERR_SCHED_PARAMS,
+			"imudp: scheduling policy set, but without priority - ignoring settings");
+		ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS);
+	} else if(modConf->pszSchedPolicy == NULL && modConf->iSchedPrio != SCHED_PRIO_UNSET) {
+		LogError(0, RS_RET_ERR_SCHED_PARAMS,
+			"imudp: scheduling priority set, but without policy - ignoring settings");
+		ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS);
+	} else if(modConf->pszSchedPolicy != NULL && modConf->iSchedPrio != SCHED_PRIO_UNSET) {
+		/* we have parameters set, so check them */
+		CHKiRet(checkSchedulingPolicy(modConf));
+		CHKiRet(checkSchedulingPriority(modConf));
+	} else { /* nothing set */
+		modConf->iSchedPrio = SCHED_PRIO_UNSET; /* prevents doing the activation call */
+	}
+#ifndef HAVE_PTHREAD_SETSCHEDPARAM
+	LogError(0, NO_ERRCODE,
+		"imudp: cannot set thread scheduling policy, "
+		"pthread_setschedparam() not available");
+	ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS);
+#endif
+
+finalize_it:
+	if(iRet != RS_RET_OK)
+		modConf->iSchedPrio = SCHED_PRIO_UNSET; /* prevents doing the activation call */
+
+	RETiRet;
+}
+
+/* set the configured scheduling policy (if possible) */
+static rsRetVal
+setSchedParams(modConfData_t *modConf)
+{
+	DEFiRet;
+
+#	ifdef HAVE_PTHREAD_SETSCHEDPARAM
+	int err;
+	struct sched_param sparam;
+
+	if(modConf->iSchedPrio == SCHED_PRIO_UNSET)
+		FINALIZE;
+
+	memset(&sparam, 0, sizeof sparam);
+	sparam.sched_priority = modConf->iSchedPrio;
+	dbgprintf("imudp trying to set sched policy to '%s', prio %d\n",
+		  modConf->pszSchedPolicy, modConf->iSchedPrio);
+	err = pthread_setschedparam(pthread_self(), modConf->iSchedPolicy, &sparam);
+	if(err != 0) {
+		LogError(err, NO_ERRCODE, "imudp: pthread_setschedparam() failed - ignoring");
+	}
+finalize_it:
+#	endif
+
+	RETiRet;
+}
+
+
+/* This function implements the main reception loop. Depending on the environment,
+ * we either use the traditional (but slower) select() or the Linux-specific epoll()
+ * interface. ./configure settings control which one is used.
+ * rgerhards, 2009-09-09
+ */
+#if defined(HAVE_EPOLL_CREATE1) || defined(HAVE_EPOLL_CREATE)
+#define NUM_EPOLL_EVENTS 10
+static rsRetVal
+rcvMainLoop(struct wrkrInfo_s *const __restrict__ pWrkr)
+{
+	DEFiRet;
+	int nfds;
+	int efd;
+	int i;
+	struct sockaddr_storage frominetPrev;
+	int bIsPermitted;
+	struct epoll_event *udpEPollEvt = NULL;
+	struct epoll_event currEvt[NUM_EPOLL_EVENTS];
+	char errStr[1024];
+	struct lstn_s *lstn;
+	int nLstn;
+
+	/* start "name caching" algo by making sure the previous system indicator
+	 * is invalidated.
+	 */
+	bIsPermitted = 0;
+	memset(&frominetPrev, 0, sizeof(frominetPrev));
+
+	/* count num listeners -- do it here in order to avoid inconsistency */
+	nLstn = 0;
+	for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next)
+		++nLstn;
+
+	if(nLstn == 0) {
+		LogError(errno, RS_RET_ERR,
+			"imudp error: we have 0 listeners, terminating"
+			"worker thread");
+		ABORT_FINALIZE(RS_RET_ERR);
+	}
+	CHKmalloc(udpEPollEvt = calloc(nLstn, sizeof(struct epoll_event)));
+
+#if defined(EPOLL_CLOEXEC) && defined(HAVE_EPOLL_CREATE1)
+	DBGPRINTF("imudp uses epoll_create1()\n");
+	efd = epoll_create1(EPOLL_CLOEXEC);
+	if(efd < 0 && errno == ENOSYS)
+#endif
+	{
+		DBGPRINTF("imudp uses epoll_create()\n");
+		efd = epoll_create(NUM_EPOLL_EVENTS);
+	}
+
+	if(efd < 0) {
+		DBGPRINTF("epoll_create1() could not create fd\n");
+		ABORT_FINALIZE(RS_RET_IO_ERROR);
+	}
+
+	/* fill the epoll set - we need to do this only once, as the set
+	 * can not change dyamically.
+	 */
+	i = 0;
+	for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) {
+		if(lstn->sock != -1) {
+			udpEPollEvt[i].events = EPOLLIN | EPOLLET;
+			udpEPollEvt[i].data.ptr = lstn;
+			if(epoll_ctl(efd, EPOLL_CTL_ADD,  lstn->sock, &(udpEPollEvt[i])) < 0) {
+				rs_strerror_r(errno, errStr, sizeof(errStr));
+				LogError(errno, NO_ERRCODE, "epoll_ctrl failed on fd %d with %s\n",
+					lstn->sock, errStr);
+			}
+		}
+		i++;
+	}
+
+	while(1) {
+		/* wait for io to become ready */
+		nfds = epoll_wait(efd, currEvt, NUM_EPOLL_EVENTS, -1);
+		DBGPRINTF("imudp: epoll_wait() returned with %d fds\n", nfds);
+
+		if(pWrkr->pThrd->bShallStop == RSTRUE)
+			break; /* terminate input! */
+
+		for(i = 0 ; i < nfds ; ++i) {
+			processSocket(pWrkr, currEvt[i].data.ptr, &frominetPrev, &bIsPermitted);
+		}
+		if(pWrkr->pThrd->bShallStop == RSTRUE)
+			break; /* terminate input! */
+	}
+
+finalize_it:
+	if(udpEPollEvt != NULL)
+		free(udpEPollEvt);
+
+	RETiRet;
+}
+#else /* #if HAVE_EPOLL_CREATE1 */
+/* this is the code for the select() interface */
+static rsRetVal ATTR_NONNULL()
+rcvMainLoop(struct wrkrInfo_s *const __restrict__ pWrkr)
+{
+	DEFiRet;
+	int nfds;
+	struct sockaddr_storage frominetPrev;
+	int bIsPermitted;
+	int i = 0;
+	struct lstn_s *lstn;
+
+	DBGPRINTF("imudp uses poll() [ex-select]\n");
+	/* start "name caching" algo by making sure the previous system indicator
+	 * is invalidated. */
+	bIsPermitted = 0;
+	memset(&frominetPrev, 0, sizeof(frominetPrev));
+
+	/* setup poll() subsystem */
+	int nfd = 0;
+	for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) {
+		if(lstn->sock != -1) {
+			if(Debug) {
+				net.debugListenInfo(lstn->sock, (char*)"UDP");
+			}
+			++nfd;
+		}
+	}
+	struct pollfd *const pollfds = calloc(nfd, sizeof(struct pollfd));
+	CHKmalloc(pollfds);
+
+	for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) {
+		assert(i < nfd);
+		if (lstn->sock != -1) {
+			pollfds[i].fd = lstn->sock;
+			pollfds[i].events = POLLIN;
+			++i;
+		}
+	}
+
+	while(1) {
+		DBGPRINTF("--------imudp calling poll() on %d fds\n", nfd);
+		nfds = poll(pollfds, nfd, -1);
+		if(glbl.GetGlobalInputTermState() == 1)
+			break; /* terminate input! */
+
+		if(nfds < 0) {
+			if(errno == EINTR) {
+				DBGPRINTF("imudp: EINTR occurred\n");
+			} else {
+				LogMsg(errno, RS_RET_POLL_ERR, LOG_WARNING, "imudp: poll "
+					"system call failed, may cause further troubles");
+			}
+			nfds = 0;
+		}
+
+		i = 0;
+		for(lstn = lcnfRoot ; nfds && lstn != NULL ; lstn = lstn->next) {
+			assert(i < nfd);
+			if(lstn->sock != -1) {
+				if(glbl.GetGlobalInputTermState() == 1)
+					ABORT_FINALIZE(RS_RET_FORCE_TERM); /* terminate input! */
+				if(pollfds[i].revents & POLLIN) {
+					processSocket(pWrkr, lstn, &frominetPrev, &bIsPermitted);
+					--nfds;
+				}
+				++i;
+			}
+	       }
+	       /* end of a run, back to loop for next recv() */
+	}
+
+finalize_it:
+	RETiRet;
+}
+#endif /* #if HAVE_EPOLL_CREATE1 */
+
+
+static rsRetVal
+createListner(es_str_t *port, struct cnfparamvals *pvals)
+{
+	instanceConf_t *inst;
+	int i;
+	int bAppendPortUsed = 0;
+	DEFiRet;
+
+	CHKiRet(createInstance(&inst));
+	inst->pszBindPort = (uchar*)es_str2cstr(port, NULL);
+	for(i = 0 ; i < inppblk.nParams ; ++i) {
+		if(!pvals[i].bUsed)
+			continue;
+		if(!strcmp(inppblk.descr[i].name, "port")) {
+			continue;	/* array, handled by caller */
+		} else if(!strcmp(inppblk.descr[i].name, "name")) {
+			if(inst->inputname != NULL) {
+				LogError(0, RS_RET_INVALID_PARAMS, "imudp: name and inputname "
+						"parameter specified - only one can be used");
+				ABORT_FINALIZE(RS_RET_INVALID_PARAMS);
+			}
+			inst->inputname = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(inppblk.descr[i].name, "name.appendport")) {
+			if(bAppendPortUsed) {
+				LogError(0, RS_RET_INVALID_PARAMS, "imudp: name.appendport and "
+						"inputname.appendport parameter specified - only one can be used");
+				ABORT_FINALIZE(RS_RET_INVALID_PARAMS);
+			}
+			inst->bAppendPortToInpname = (int) pvals[i].val.d.n;
+			bAppendPortUsed = 1;
+		} else if(!strcmp(inppblk.descr[i].name, "inputname")) {
+			LogError(0, RS_RET_DEPRECATED , "imudp: deprecated parameter inputname "
+					"used. Suggest to use name instead");
+			if(inst->inputname != NULL) {
+				LogError(0, RS_RET_INVALID_PARAMS, "imudp: name and inputname "
+						"parameter specified - only one can be used");
+				ABORT_FINALIZE(RS_RET_INVALID_PARAMS);
+			}
+			inst->inputname = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(inppblk.descr[i].name, "inputname.appendport")) {
+			LogError(0, RS_RET_DEPRECATED , "imudp: deprecated parameter inputname.appendport "
+					"used. Suggest to use name.appendport instead");
+			if(bAppendPortUsed) {
+				LogError(0, RS_RET_INVALID_PARAMS, "imudp: name.appendport and "
+						"inputname.appendport parameter specified - only one can be used");
+				ABORT_FINALIZE(RS_RET_INVALID_PARAMS);
+			}
+			bAppendPortUsed = 1;
+			inst->bAppendPortToInpname = (int) pvals[i].val.d.n;
+		} else if(!strcmp(inppblk.descr[i].name, "defaulttz")) {
+			inst->dfltTZ = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(inppblk.descr[i].name, "address")) {
+			inst->pszBindAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(inppblk.descr[i].name, "device")) {
+			inst->pszBindDevice = (char*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(inppblk.descr[i].name, "ruleset")) {
+			inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(inppblk.descr[i].name, "ratelimit.burst")) {
+			inst->ratelimitBurst = (unsigned int) pvals[i].val.d.n;
+		} else if(!strcmp(inppblk.descr[i].name, "ratelimit.interval")) {
+			inst->ratelimitInterval = (unsigned int) pvals[i].val.d.n;
+		} else if(!strcmp(inppblk.descr[i].name, "rcvbufsize")) {
+			const uint64_t val = pvals[i].val.d.n;
+			if(val > 1024 * 1024 * 1024) {
+				LogError(0, RS_RET_MISSING_CNFPARAMS,
+					"imudp: rcvbufsize maximum is 1 GiB, using "
+					"default instead");
+			} else {
+				inst->rcvbuf = (int) val;
+			}
+		} else if(!strcmp(inppblk.descr[i].name, "ipfreebind")) {
+			inst->ipfreebind = (int) pvals[i].val.d.n;
+		} else {
+			dbgprintf("imudp: program error, non-handled "
+			  "param '%s'\n", inppblk.descr[i].name);
+		}
+	}
+finalize_it:
+	RETiRet;
+}
+
+
+BEGINnewInpInst
+	struct cnfparamvals *pvals;
+	int i;
+	int portIdx;
+CODESTARTnewInpInst
+	DBGPRINTF("newInpInst (imudp)\n");
+
+	if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) {
+		ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS);
+	}
+	if(Debug) {
+		dbgprintf("input param blk in imudp:\n");
+		cnfparamsPrint(&inppblk, pvals);
+	}
+
+	portIdx = cnfparamGetIdx(&inppblk, "port");
+	assert(portIdx != -1);
+	for(i = 0 ; i <  pvals[portIdx].val.d.ar->nmemb ; ++i) {
+		createListner(pvals[portIdx].val.d.ar->arr[i], pvals);
+	}
+
+finalize_it:
+CODE_STD_FINALIZERnewInpInst
+	cnfparamvalsDestruct(pvals, &inppblk);
+ENDnewInpInst
+
+
+BEGINbeginCnfLoad
+CODESTARTbeginCnfLoad
+	loadModConf = pModConf;
+	pModConf->pConf = pConf;
+	/* init our settings */
+	loadModConf->configSetViaV2Method = 0;
+	loadModConf->wrkrMax = 1; /* conservative, but least msg reordering */
+	loadModConf->batchSize = BATCH_SIZE_DFLT;
+	loadModConf->iTimeRequery = TIME_REQUERY_DFLT;
+	loadModConf->iSchedPrio = SCHED_PRIO_UNSET;
+	loadModConf->pszSchedPolicy = NULL;
+	loadModConf->bPreserveCase = 0; /* off */
+	bLegacyCnfModGlobalsPermitted = 1;
+	/* init legacy config vars */
+	cs.pszBindRuleset = NULL;
+	cs.pszSchedPolicy = NULL;
+	cs.pszBindAddr = NULL;
+	cs.pszBindDevice = NULL;
+	cs.iSchedPrio = SCHED_PRIO_UNSET;
+	cs.iTimeRequery = TIME_REQUERY_DFLT;
+ENDbeginCnfLoad
+
+
+BEGINsetModCnf
+	struct cnfparamvals *pvals = NULL;
+	int i;
+	int wrkrMax;
+CODESTARTsetModCnf
+	pvals = nvlstGetParams(lst, &modpblk, NULL);
+	if(pvals == NULL) {
+		LogError(0, RS_RET_MISSING_CNFPARAMS, "imudp: error processing module "
+				"config parameters [module(...)]");
+		ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS);
+	}
+
+	if(Debug) {
+		dbgprintf("module (global) param blk for imudp:\n");
+		cnfparamsPrint(&modpblk, pvals);
+	}
+
+	for(i = 0 ; i < modpblk.nParams ; ++i) {
+		if(!pvals[i].bUsed)
+			continue;
+		if(!strcmp(modpblk.descr[i].name, "timerequery")) {
+			loadModConf->iTimeRequery = (int) pvals[i].val.d.n;
+		} else if(!strcmp(modpblk.descr[i].name, "batchsize")) {
+			loadModConf->batchSize = (int) pvals[i].val.d.n;
+		} else if(!strcmp(modpblk.descr[i].name, "schedulingpriority")) {
+			loadModConf->iSchedPrio = (int) pvals[i].val.d.n;
+		} else if(!strcmp(modpblk.descr[i].name, "schedulingpolicy")) {
+			loadModConf->pszSchedPolicy = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL);
+		} else if(!strcmp(modpblk.descr[i].name, "threads")) {
+			wrkrMax = (int) pvals[i].val.d.n;
+			if(wrkrMax > MAX_WRKR_THREADS) {
+				LogError(0, RS_RET_PARAM_ERROR, "imudp: configured for %d"
+						"worker threads, but maximum permitted is %d",
+						wrkrMax, MAX_WRKR_THREADS);
+				loadModConf->wrkrMax = MAX_WRKR_THREADS;
+			} else {
+				loadModConf->wrkrMax = wrkrMax;
+			}
+		} else if(!strcmp(modpblk.descr[i].name, "preservecase")) {
+			loadModConf->bPreserveCase = (int) pvals[i].val.d.n;
+		} else {
+			dbgprintf("imudp: program error, non-handled "
+			  "param '%s' in beginCnfLoad\n", modpblk.descr[i].name);
+		}
+	}
+
+	/* remove all of our legacy handlers, as they can not used in addition
+	 * the the new-style config method.
+	 */
+	bLegacyCnfModGlobalsPermitted = 0;
+	loadModConf->configSetViaV2Method = 1;
+
+finalize_it:
+	if(pvals != NULL)
+		cnfparamvalsDestruct(pvals, &modpblk);
+ENDsetModCnf
+
+BEGINendCnfLoad
+CODESTARTendCnfLoad
+	if(!loadModConf->configSetViaV2Method) {
+		/* persist module-specific settings from legacy config system */
+		loadModConf->iSchedPrio = cs.iSchedPrio;
+		loadModConf->iTimeRequery = cs.iTimeRequery;
+		if((cs.pszSchedPolicy != NULL) && (cs.pszSchedPolicy[0] != '\0')) {
+			CHKmalloc(loadModConf->pszSchedPolicy = ustrdup(cs.pszSchedPolicy));
+		}
+	}
+
+finalize_it:
+	loadModConf = NULL; /* done loading */
+	/* free legacy config vars */
+	free(cs.pszBindRuleset);
+	free(cs.pszSchedPolicy);
+	free(cs.pszBindAddr);
+	free(cs.pszBindDevice);
+ENDendCnfLoad
+
+
+BEGINcheckCnf
+	instanceConf_t *inst;
+CODESTARTcheckCnf
+	checkSchedParam(pModConf); /* this can not cause fatal errors */
+	for(inst = pModConf->root ; inst != NULL ; inst = inst->next) {
+		std_checkRuleset(pModConf, inst);
+	}
+	if(pModConf->root == NULL) {
+		LogError(0, RS_RET_NO_LISTNERS , "imudp: module loaded, but "
+				"no listeners defined - no input will be gathered");
+		iRet = RS_RET_NO_LISTNERS;
+	}
+ENDcheckCnf
+
+
+BEGINactivateCnfPrePrivDrop
+	instanceConf_t *inst;
+CODESTARTactivateCnfPrePrivDrop
+	runModConf = pModConf;
+	for(inst = runModConf->root ; inst != NULL ; inst = inst->next) {
+		addListner(inst);
+	}
+	/* if we could not set up any listeners, there is no point in running... */
+	if(lcnfRoot == NULL) {
+		LogError(0, NO_ERRCODE, "imudp: no listeners could be started, "
+				"input not activated.\n");
+		ABORT_FINALIZE(RS_RET_NO_RUN);
+	}
+
+finalize_it:
+ENDactivateCnfPrePrivDrop
+
+
+BEGINactivateCnf
+	int i;
+	int lenRcvBuf;
+CODESTARTactivateCnf
+	/* caching various settings */
+	iMaxLine = glbl.GetMaxLine(runConf);
+	lenRcvBuf = iMaxLine + 1;
+#	ifdef HAVE_RECVMMSG
+	lenRcvBuf *= runModConf->batchSize;
+#	endif
+	DBGPRINTF("imudp: config params iMaxLine %d, lenRcvBuf %d\n", iMaxLine, lenRcvBuf);
+	for(i = 0 ; i < runModConf->wrkrMax ; ++i) {
+#		ifdef HAVE_RECVMMSG
+		CHKmalloc(wrkrInfo[i].recvmsg_iov = malloc(runModConf->batchSize * sizeof(struct iovec)));
+		CHKmalloc(wrkrInfo[i].recvmsg_mmh = malloc(runModConf->batchSize * sizeof(struct mmsghdr)));
+		CHKmalloc(wrkrInfo[i].frominet = malloc(runModConf->batchSize * sizeof(struct sockaddr_storage)));
+#		endif
+		CHKmalloc(wrkrInfo[i].pRcvBuf = malloc(lenRcvBuf));
+		wrkrInfo[i].id = i;
+	}
+finalize_it:
+ENDactivateCnf
+
+
+BEGINfreeCnf
+	instanceConf_t *inst, *del;
+CODESTARTfreeCnf
+	for(inst = pModConf->root ; inst != NULL ; ) {
+		free(inst->pszBindPort);
+		free(inst->pszBindAddr);
+		free(inst->pszBindDevice);
+		free(inst->pszBindRuleset);
+		free(inst->inputname);
+		free(inst->dfltTZ);
+		del = inst;
+		inst = inst->next;
+		free(del);
+	}
+ENDfreeCnf
+
+
+static void *
+wrkr(void *myself)
+{
+	struct wrkrInfo_s *pWrkr = (struct wrkrInfo_s*) myself;
+	uchar thrdName[32];
+
+	snprintf((char*)thrdName, sizeof(thrdName), "imudp(w%d)", pWrkr->id);
+#	if defined(HAVE_PRCTL) && defined(PR_SET_NAME)
+	/* set thread name - we ignore if the call fails, has no harsh consequences... */
+	if(prctl(PR_SET_NAME, thrdName, 0, 0, 0) != 0) {
+		DBGPRINTF("prctl failed, not setting thread name for '%s'\n", thrdName);
+	}
+#	endif
+	dbgOutputTID((char*)thrdName);
+
+	/* Note well: the setting of scheduling parameters will not work
+	 * when we dropped privileges (if the user is not sufficiently
+	 * privileged, of course). Howerver, we can't change the
+	 * scheduling params in PrePrivDrop(), as at that point our thread
+	 * is not yet created. So at least as an interim solution, we do
+	 * NOT support both setting sched parameters and dropping
+	 * privileges within the same instance.
+	 */
+	setSchedParams(runModConf);
+
+	/* support statistics gathering */
+	statsobj.Construct(&(pWrkr->stats));
+	statsobj.SetName(pWrkr->stats, thrdName);
+	statsobj.SetOrigin(pWrkr->stats, (uchar*)"imudp");
+	STATSCOUNTER_INIT(pWrkr->ctrCall_recvmmsg, pWrkr->mutCtrCall_recvmmsg);
+	statsobj.AddCounter(pWrkr->stats, UCHAR_CONSTANT("called.recvmmsg"),
+		ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pWrkr->ctrCall_recvmmsg));
+	STATSCOUNTER_INIT(pWrkr->ctrCall_recvmsg, pWrkr->mutCtrCall_recvmsg);
+	statsobj.AddCounter(pWrkr->stats, UCHAR_CONSTANT("called.recvmsg"),
+		ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pWrkr->ctrCall_recvmsg));
+	STATSCOUNTER_INIT(pWrkr->ctrMsgsRcvd, pWrkr->mutCtrMsgsRcvd);
+	statsobj.AddCounter(pWrkr->stats, UCHAR_CONSTANT("msgs.received"),
+		ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pWrkr->ctrMsgsRcvd));
+	statsobj.ConstructFinalize(pWrkr->stats);
+
+	rcvMainLoop(pWrkr);
+
+	/* cleanup */
+	return NULL;
+}
+
+/* This function is called to gather input.
+ * In essence, it just starts the pool of workers. To save resources,
+ * we run one of the workers on our own thread -- otherwise that thread would
+ * just idle around and wait for the workers to finish.
+ */
+BEGINrunInput
+	int i;
+	pthread_attr_t wrkrThrdAttr;
+CODESTARTrunInput
+	pthread_attr_init(&wrkrThrdAttr);
+	pthread_attr_setstacksize(&wrkrThrdAttr, 4096*1024);
+	for(i = 0 ; i < runModConf->wrkrMax - 1 ; ++i) {
+		wrkrInfo[i].pThrd = pThrd;
+		pthread_create(&wrkrInfo[i].tid, &wrkrThrdAttr, wrkr, &(wrkrInfo[i]));
+	}
+	pthread_attr_destroy(&wrkrThrdAttr);
+
+	wrkrInfo[i].pThrd = pThrd;
+	wrkrInfo[i].id = i;
+	wrkr(&wrkrInfo[i]);
+
+	for(i = 0 ; i < runModConf->wrkrMax - 1 ; ++i) {
+		pthread_kill(wrkrInfo[i].tid, SIGTTIN);
+	}
+	for(i = 0 ; i < runModConf->wrkrMax - 1 ; ++i) {
+		pthread_join(wrkrInfo[i].tid, NULL);
+	}
+ENDrunInput
+
+
+/* initialize and return if will run or not */
+BEGINwillRun
+CODESTARTwillRun
+	net.PrintAllowedSenders(1); /* UDP */
+	net.HasRestrictions(UCHAR_CONSTANT("UDP"), &bDoACLCheck); /* UDP */
+ENDwillRun
+
+
+BEGINafterRun
+	struct lstn_s *lstn, *lstnDel;
+	int i;
+CODESTARTafterRun
+	/* do cleanup here */
+	net.clearAllowedSenders((uchar*)"UDP");
+	for(lstn = lcnfRoot ; lstn != NULL ; ) {
+		statsobj.Destruct(&(lstn->stats));
+		ratelimitDestruct(lstn->ratelimiter);
+		close(lstn->sock);
+		prop.Destruct(&lstn->pInputName);
+		lstnDel = lstn;
+		lstn = lstn->next;
+		free(lstnDel);
+	}
+	lcnfRoot = lcnfLast = NULL;
+	for(i = 0 ; i < runModConf->wrkrMax ; ++i) {
+#		ifdef HAVE_RECVMMSG
+		free(wrkrInfo[i].recvmsg_iov);
+		free(wrkrInfo[i].recvmsg_mmh);
+		free(wrkrInfo[i].frominet);
+#		endif
+		free(wrkrInfo[i].pRcvBuf);
+	}
+ENDafterRun
+
+
+BEGINmodExit
+CODESTARTmodExit
+	/* release what we no longer need */
+	objRelease(glbl, CORE_COMPONENT);
+	objRelease(statsobj, CORE_COMPONENT);
+	objRelease(datetime, CORE_COMPONENT);
+	objRelease(prop, CORE_COMPONENT);
+	objRelease(ruleset, CORE_COMPONENT);
+	objRelease(net, LM_NET_FILENAME);
+ENDmodExit
+
+
+BEGINisCompatibleWithFeature
+CODESTARTisCompatibleWithFeature
+	if(eFeat == sFEATURENonCancelInputTermination)
+		iRet = RS_RET_OK;
+ENDisCompatibleWithFeature
+
+
+BEGINqueryEtryPt
+CODESTARTqueryEtryPt
+CODEqueryEtryPt_STD_IMOD_QUERIES
+CODEqueryEtryPt_STD_CONF2_QUERIES
+CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES
+CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES
+CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES
+CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES
+ENDqueryEtryPt
+
+static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal)
+{
+	free(cs.pszBindAddr);
+	cs.pszBindAddr = NULL;
+	free(cs.pszBindDevice);
+	cs.pszBindDevice = NULL;
+	free(cs.pszSchedPolicy);
+	cs.pszSchedPolicy = NULL;
+	free(cs.pszBindRuleset);
+	cs.pszBindRuleset = NULL;
+	cs.iSchedPrio = SCHED_PRIO_UNSET;
+	cs.iTimeRequery = TIME_REQUERY_DFLT;/* the default is to query only every second time */
+	return RS_RET_OK;
+}
+
+
+BEGINmodInit()
+CODESTARTmodInit
+	*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
+CODEmodInit_QueryRegCFSLineHdlr
+	CHKiRet(objUse(glbl, CORE_COMPONENT));
+	CHKiRet(objUse(statsobj, CORE_COMPONENT));
+	CHKiRet(objUse(datetime, CORE_COMPONENT));
+	CHKiRet(objUse(prop, CORE_COMPONENT));
+	CHKiRet(objUse(ruleset, CORE_COMPONENT));
+	CHKiRet(objUse(net, LM_NET_FILENAME));
+
+	DBGPRINTF("imudp: version %s initializing\n", VERSION);
+#	ifdef HAVE_RECVMMSG
+	DBGPRINTF("imdup: support for recvmmsg() present\n");
+#	endif
+
+	/* register config file handlers */
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputudpserverbindruleset", 0, eCmdHdlrGetWord,
+		NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID));
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"udpserverrun", 0, eCmdHdlrGetWord,
+		addInstance, NULL, STD_LOADABLE_MODULE_ID));
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"udpserveraddress", 0, eCmdHdlrGetWord,
+		NULL, &cs.pszBindAddr, STD_LOADABLE_MODULE_ID));
+	/* module-global config params - will be disabled in configs that are loaded
+	 * via module(...).
+	 */
+	CHKiRet(regCfSysLineHdlr2((uchar *)"imudpschedulingpolicy", 0, eCmdHdlrGetWord,
+		NULL, &cs.pszSchedPolicy, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted));
+	CHKiRet(regCfSysLineHdlr2((uchar *)"imudpschedulingpriority", 0, eCmdHdlrInt,
+		NULL, &cs.iSchedPrio, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted));
+	CHKiRet(regCfSysLineHdlr2((uchar *)"udpservertimerequery", 0, eCmdHdlrInt,
+		NULL, &cs.iTimeRequery, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted));
+
+	CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler,
+		resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID));
+ENDmodInit
+/* vim:set ai:
+ */