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-rw-r--r--runtime/glbl.c214
1 files changed, 195 insertions, 19 deletions
diff --git a/runtime/glbl.c b/runtime/glbl.c
index 38e1f953..537b7b4f 100644
--- a/runtime/glbl.c
+++ b/runtime/glbl.c
@@ -7,25 +7,23 @@
*
* Module begun 2008-04-16 by Rainer Gerhards
*
- * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
+ * Copyright 2008-2011 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of the rsyslog runtime library.
*
- * The rsyslog runtime library is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * The rsyslog runtime library 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 Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with the rsyslog runtime library. If not, see <http://www.gnu.org/licenses/>.
- *
- * A copy of the GPL can be found in the file "COPYING" in this distribution.
- * A copy of the LGPL can be found in the file "COPYING.LESSER" in this distribution.
+ * 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"
@@ -44,6 +42,8 @@
#include "prop.h"
#include "atomic.h"
#include "errmsg.h"
+#include "rainerscript.h"
+#include "net.h"
/* some defaults */
#ifndef DFLT_NETSTRM_DRVR
@@ -54,6 +54,7 @@
DEFobjStaticHelpers
DEFobjCurrIf(prop)
DEFobjCurrIf(errmsg)
+DEFobjCurrIf(net)
/* static data
* For this object, these variables are obviously what makes the "meat" of the
@@ -63,11 +64,12 @@ static uchar *pszWorkDir = NULL;
static int bOptimizeUniProc = 1; /* enable uniprocessor optimizations */
static int bParseHOSTNAMEandTAG = 1; /* parser modification (based on startup params!) */
static int bPreserveFQDN = 0; /* should FQDNs always be preserved? */
-static int iMaxLine = 2048; /* maximum length of a syslog message */
+static int iMaxLine = 8096; /* maximum length of a syslog message */
static int iDefPFFamily = PF_UNSPEC; /* protocol family (IPv4, IPv6 or both) */
static int bDropMalPTRMsgs = 0;/* Drop messages which have malicious PTR records during DNS lookup */
static int option_DisallowWarning = 1; /* complain if message from disallowed sender is received */
static int bDisableDNS = 0; /* don't look up IP addresses of remote messages */
+static prop_t *propLocalIPIF = NULL;/* IP address to report for the local host (default is 127.0.0.1) */
static prop_t *propLocalHostName = NULL;/* our hostname as FQDN - read-only after startup */
static uchar *LocalHostName = NULL;/* our hostname - read-only after startup, except HUP */
static uchar *LocalHostNameOverride = NULL;/* user-overridden hostname - read-only after startup */
@@ -88,6 +90,29 @@ static int iFdSetSize = howmany(FD_SETSIZE, __NFDBITS) * sizeof (fd_mask); /* si
#endif
+/* tables for interfacing with the v6 config system */
+static struct cnfparamdescr cnfparamdescr[] = {
+ { "workdirectory", eCmdHdlrString, 0 },
+ { "dropmsgswithmaliciousdnsptrrecords", eCmdHdlrBinary, 0 },
+ { "localhostname", eCmdHdlrGetWord, 0 },
+ { "preservefqdn", eCmdHdlrBinary, 0 },
+ { "defaultnetstreamdrivercafile", eCmdHdlrString, 0 },
+ { "defaultnetstreamdriverkeyfile", eCmdHdlrString, 0 },
+ { "defaultnetstreamdriver", eCmdHdlrString, 0 },
+ { "maxmessagesize", eCmdHdlrSize, 0 },
+};
+static struct cnfparamblk paramblk =
+ { CNFPARAMBLK_VERSION,
+ sizeof(cnfparamdescr)/sizeof(struct cnfparamdescr),
+ cnfparamdescr
+ };
+
+static struct cnfparamvals *cnfparamvals = NULL;
+/* we need to support multiple calls into our param block, so we need
+ * to persist the current settings. Note that this must be re-set
+ * each time a new config load begins (TODO: create interface?)
+ */
+
/* define a macro for the simple properties' set and get functions
* (which are always the same). This is only suitable for pretty
* simple cases which require neither checks nor memory allocation.
@@ -140,7 +165,7 @@ static int GetGlobalInputTermState(void)
}
-/* set global termiantion state to "terminate". Note that this is a
+/* set global termination state to "terminate". Note that this is a
* "once in a lifetime" action which can not be undone. -- gerhards, 2009-07-20
*/
static void SetGlobalInputTermination(void)
@@ -149,6 +174,60 @@ static void SetGlobalInputTermination(void)
}
+/* set the local host IP address to a specific string. Helper to
+ * small set of functions. No checks done, caller must ensure it is
+ * ok to call. Most importantly, the IP address must not already have
+ * been set. -- rgerhards, 2012-03-21
+ */
+static inline rsRetVal
+storeLocalHostIPIF(uchar *myIP)
+{
+ DEFiRet;
+ CHKiRet(prop.Construct(&propLocalIPIF));
+ CHKiRet(prop.SetString(propLocalIPIF, myIP, ustrlen(myIP)));
+ CHKiRet(prop.ConstructFinalize(propLocalIPIF));
+ DBGPRINTF("rsyslog/glbl: using '%s' as localhost IP\n", myIP);
+finalize_it:
+ RETiRet;
+}
+
+
+/* This function is used to set the IP address that is to be
+ * reported for the local host. Note that in order to ease things
+ * for the v6 config interface, we do not allow to set this more
+ * than once.
+ * rgerhards, 2012-03-21
+ */
+static rsRetVal
+setLocalHostIPIF(void __attribute__((unused)) *pVal, uchar *pNewVal)
+{
+ uchar myIP[128];
+ rsRetVal localRet;
+ DEFiRet;
+
+ CHKiRet(objUse(net, CORE_COMPONENT));
+
+ if(propLocalIPIF != NULL) {
+ errmsg.LogError(0, RS_RET_ERR, "$LocalHostIPIF is already set "
+ "and cannot be reset; place it at TOP OF rsyslog.conf!");
+ ABORT_FINALIZE(RS_RET_ERR_WRKDIR);
+ }
+
+ localRet = net.GetIFIPAddr(pNewVal, AF_UNSPEC, myIP, (int) sizeof(myIP));
+ if(localRet != RS_RET_OK) {
+ errmsg.LogError(0, RS_RET_ERR, "$LocalHostIPIF: IP address for interface "
+ "'%s' cannnot be obtained - ignoring directive", pNewVal);
+ } else {
+ storeLocalHostIPIF(myIP);
+ }
+
+
+finalize_it:
+ free(pNewVal); /* no longer needed -> is in prop! */
+ RETiRet;
+}
+
+
/* This function is used to set the global work directory name.
* It verifies that the provided directory actually exists and
* emits an error message if not.
@@ -199,6 +278,23 @@ finalize_it:
RETiRet;
}
+/* return our local IP.
+ * If no local IP is set, "127.0.0.1" is selected *and* set. This
+ * is an intensional side effect that we do in order to keep things
+ * consistent and avoid config errors (this will make us not accept
+ * setting the local IP address once a module has obtained it - so
+ * it forces the $LocalHostIPIF directive high up in rsyslog.conf)
+ * rgerhards, 2012-03-21
+ */
+static prop_t*
+GetLocalHostIP(void)
+{
+ if(propLocalIPIF == NULL)
+ storeLocalHostIPIF((uchar*)"127.0.0.1");
+ return(propLocalIPIF);
+}
+
+
/* set our local hostname. Free previous hostname, if it was already set.
* Note that we do now do this in a thread
* "once in a lifetime" action which can not be undone. -- gerhards, 2009-07-20
@@ -376,6 +472,7 @@ CODESTARTobjQueryInterface(glbl)
pIf->GetWorkDir = GetWorkDir;
pIf->GenerateLocalHostNameProperty = GenerateLocalHostNameProperty;
pIf->GetLocalHostNameProp = GetLocalHostNameProp;
+ pIf->GetLocalHostIP = GetLocalHostIP;
pIf->SetGlobalInputTermination = SetGlobalInputTermination;
pIf->GetGlobalInputTermState = GetGlobalInputTermState;
#define SIMP_PROP(name) \
@@ -426,6 +523,7 @@ static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __a
bDropMalPTRMsgs = 0;
bOptimizeUniProc = 1;
bPreserveFQDN = 0;
+ iMaxLine = 8192;
#ifdef USE_UNLIMITED_SELECT
iFdSetSize = howmany(FD_SETSIZE, __NFDBITS) * sizeof (fd_mask);
#endif
@@ -433,6 +531,79 @@ static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __a
}
+/* Prepare for new config
+ */
+void
+glblPrepCnf(void)
+{
+ free(cnfparamvals);
+ cnfparamvals = NULL;
+}
+
+/* handle a global config object. Note that multiple global config statements
+ * are permitted (because of plugin support), so once we got a param block,
+ * we need to hold to it.
+ * rgerhards, 2011-07-19
+ */
+void
+glblProcessCnf(struct cnfobj *o)
+{
+ cnfparamvals = nvlstGetParams(o->nvlst, &paramblk, cnfparamvals);
+ dbgprintf("glbl param blk after glblProcessCnf:\n");
+ cnfparamsPrint(&paramblk, cnfparamvals);
+}
+
+rsRetVal
+glblCheckCnf()
+{
+}
+
+void
+glblDoneLoadCnf(void)
+{
+ int i;
+ unsigned char *cstr;
+
+ if(cnfparamvals == NULL)
+ goto finalize_it;
+
+ for(i = 0 ; i < paramblk.nParams ; ++i) {
+ if(!cnfparamvals[i].bUsed)
+ continue;
+ if(!strcmp(paramblk.descr[i].name, "workdirectory")) {
+ cstr = (uchar*) es_str2cstr(cnfparamvals[i].val.d.estr, NULL);
+ setWorkDir(NULL, cstr);
+ } else if(!strcmp(paramblk.descr[i].name, "localhostname")) {
+ free(LocalHostNameOverride);
+ LocalHostNameOverride = (uchar*)
+ es_str2cstr(cnfparamvals[i].val.d.estr, NULL);
+ } else if(!strcmp(paramblk.descr[i].name, "defaultnetstreamdriverkeyfile")) {
+ free(pszDfltNetstrmDrvrKeyFile);
+ pszDfltNetstrmDrvrKeyFile = (uchar*)
+ es_str2cstr(cnfparamvals[i].val.d.estr, NULL);
+ } else if(!strcmp(paramblk.descr[i].name, "defaultnetstreamdrivercafile")) {
+ free(pszDfltNetstrmDrvrCAF);
+ pszDfltNetstrmDrvrCAF = (uchar*)
+ es_str2cstr(cnfparamvals[i].val.d.estr, NULL);
+ } else if(!strcmp(paramblk.descr[i].name, "defaultnetstreamdriver")) {
+ free(pszDfltNetstrmDrvr);
+ pszDfltNetstrmDrvr = (uchar*)
+ es_str2cstr(cnfparamvals[i].val.d.estr, NULL);
+ } else if(!strcmp(paramblk.descr[i].name, "preservefqdn")) {
+ bPreserveFQDN = (int) cnfparamvals[i].val.d.n;
+ } else if(!strcmp(paramblk.descr[i].name,
+ "dropmsgswithmaliciousdnsptrrecords")) {
+ bDropMalPTRMsgs = (int) cnfparamvals[i].val.d.n;
+ } else if(!strcmp(paramblk.descr[i].name, "maxmessagesize")) {
+ iMaxLine = (int) cnfparamvals[i].val.d.n;
+ } else {
+ dbgprintf("glblDoneLoadCnf: program error, non-handled "
+ "param '%s'\n", paramblk.descr[i].name);
+ }
+ }
+finalize_it: ;
+}
+
/* Initialize the glbl class. Must be called as the very first method
* before anything else is called inside this class.
@@ -443,7 +614,7 @@ BEGINAbstractObjClassInit(glbl, 1, OBJ_IS_CORE_MODULE) /* class, version */
CHKiRet(objUse(prop, CORE_COMPONENT));
CHKiRet(objUse(errmsg, CORE_COMPONENT));
- /* register config handlers (TODO: we need to implement a way to unregister them) */
+ /* config handlers are never unregistered and need not be - we are always loaded ;) */
CHKiRet(regCfSysLineHdlr((uchar *)"workdirectory", 0, eCmdHdlrGetWord, setWorkDir, NULL, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"dropmsgswithmaliciousdnsptrrecords", 0, eCmdHdlrBinary, NULL, &bDropMalPTRMsgs, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdriver", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvr, NULL));
@@ -451,8 +622,11 @@ BEGINAbstractObjClassInit(glbl, 1, OBJ_IS_CORE_MODULE) /* class, version */
CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdriverkeyfile", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvrKeyFile, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdrivercertfile", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvrCertFile, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"localhostname", 0, eCmdHdlrGetWord, NULL, &LocalHostNameOverride, NULL));
+ CHKiRet(regCfSysLineHdlr((uchar *)"localhostipif", 0, eCmdHdlrGetWord, setLocalHostIPIF, NULL, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"optimizeforuniprocessor", 0, eCmdHdlrBinary, NULL, &bOptimizeUniProc, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"preservefqdn", 0, eCmdHdlrBinary, NULL, &bPreserveFQDN, NULL));
+ CHKiRet(regCfSysLineHdlr((uchar *)"maxmessagesize", 0, eCmdHdlrSize,
+ NULL, &iMaxLine, NULL));
CHKiRet(regCfSysLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, NULL, NULL));
INIT_ATOMIC_HELPER_MUT(mutTerminateInputs);
@@ -476,5 +650,7 @@ BEGINObjClassExit(glbl, OBJ_IS_CORE_MODULE) /* class, version */
DESTROY_ATOMIC_HELPER_MUT(mutTerminateInputs);
ENDObjClassExit(glbl)
+void glblProcessCnf(struct cnfobj *o);
+
/* vi:set ai:
*/
generated by cgit (git 2.34.1) at 2024-04-16 10:45:03 +0000