1 files changed, 258 insertions, 0 deletions
diff --git a/runtime/glbl.c b/runtime/glbl.c
new file mode 100644
index 0000000..11a664f
--- /dev/null
+++ b/runtime/glbl.c
@@ -0,0 +1,258 @@
+/* glbl.c - this module holds global defintions and data items.
+ * These are shared among the runtime library. Their use should be
+ * limited to cases where it is actually needed. The main intension for
+ * implementing them was support for the transistion from v2 to v4
+ * (with fully modular design), but it turned out that there may also
+ * be some other good use cases besides backwards-compatibility.
+ *
+ * Module begun 2008-04-16 by Rainer Gerhards
+ *
+ * Copyright 2008 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.
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <assert.h>
+
+#include "rsyslog.h"
+#include "obj.h"
+#include "cfsysline.h"
+#include "glbl.h"
+
+/* some defaults */
+#ifndef DFLT_NETSTRM_DRVR
+#	define DFLT_NETSTRM_DRVR ((uchar*)"ptcp")
+#endif
+
+/* static data */
+DEFobjStaticHelpers
+
+/* static data
+ * For this object, these variables are obviously what makes the "meat" of the
+ * class...
+ */
+static uchar *pszWorkDir = NULL;
+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 uchar *LocalHostName = NULL;/* our hostname  - read-only after startup */
+static uchar *LocalDomain;	/* our local domain name  - read-only after startup */
+static char **StripDomains = NULL;/* these domains may be stripped before writing logs  - r/o after s.u., never touched by init */
+static char **LocalHosts = NULL;/* these hosts are logged with their hostname  - read-only after startup, never touched by init */
+static uchar *pszDfltNetstrmDrvr = NULL; /* module name of default netstream driver */
+static uchar *pszDfltNetstrmDrvrCAF = NULL; /* default CA file for the netstrm driver */
+static uchar *pszDfltNetstrmDrvrKeyFile = NULL; /* default key file for the netstrm driver (server) */
+static uchar *pszDfltNetstrmDrvrCertFile = NULL; /* default cert file for the netstrm driver (server) */
+
+
+/* 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.
+ */
+#define SIMP_PROP(nameFunc, nameVar, dataType) \
+	SIMP_PROP_GET(nameFunc, nameVar, dataType) \
+	SIMP_PROP_SET(nameFunc, nameVar, dataType) 
+#define SIMP_PROP_SET(nameFunc, nameVar, dataType) \
+static rsRetVal Set##nameFunc(dataType newVal) \
+{ \
+	nameVar = newVal; \
+	return RS_RET_OK; \
+} 
+#define SIMP_PROP_GET(nameFunc, nameVar, dataType) \
+static dataType Get##nameFunc(void) \
+{ \
+	return(nameVar); \
+}
+
+SIMP_PROP(DefPFFamily, iDefPFFamily, int) /* note that in the future we may check the family argument */
+SIMP_PROP(DropMalPTRMsgs, bDropMalPTRMsgs, int)
+SIMP_PROP(Option_DisallowWarning, option_DisallowWarning, int)
+SIMP_PROP(DisableDNS, bDisableDNS, int)
+SIMP_PROP(LocalDomain, LocalDomain, uchar*)
+SIMP_PROP(StripDomains, StripDomains, char**)
+SIMP_PROP(LocalHosts, LocalHosts, char**)
+
+SIMP_PROP_SET(LocalHostName, LocalHostName, uchar*)
+SIMP_PROP_SET(DfltNetstrmDrvr, pszDfltNetstrmDrvr, uchar*) /* TODO: use custom function which frees existing value */
+SIMP_PROP_SET(DfltNetstrmDrvrCAF, pszDfltNetstrmDrvrCAF, uchar*) /* TODO: use custom function which frees existing value */
+SIMP_PROP_SET(DfltNetstrmDrvrKeyFile, pszDfltNetstrmDrvrKeyFile, uchar*) /* TODO: use custom function which frees existing value */
+SIMP_PROP_SET(DfltNetstrmDrvrCertFile, pszDfltNetstrmDrvrCertFile, uchar*) /* TODO: use custom function which frees existing value */
+
+#undef SIMP_PROP
+#undef SIMP_PROP_SET
+#undef SIMP_PROP_GET
+
+
+/* return our local hostname. if it is not set, "[localhost]" is returned
+ */
+static uchar*
+GetLocalHostName(void)
+{
+	return(LocalHostName == NULL ? (uchar*) "[localhost]" : LocalHostName);
+}
+
+
+/* return the current working directory */
+static uchar*
+GetWorkDir(void)
+{
+	return(pszWorkDir == NULL ? (uchar*) "" : pszWorkDir);
+}
+
+
+/* return the current default netstream driver */
+static uchar*
+GetDfltNetstrmDrvr(void)
+{
+	return(pszDfltNetstrmDrvr == NULL ? DFLT_NETSTRM_DRVR : pszDfltNetstrmDrvr);
+}
+
+
+/* return the current default netstream driver CA File */
+static uchar*
+GetDfltNetstrmDrvrCAF(void)
+{
+	return(pszDfltNetstrmDrvrCAF);
+}
+
+
+/* return the current default netstream driver key File */
+static uchar*
+GetDfltNetstrmDrvrKeyFile(void)
+{
+	return(pszDfltNetstrmDrvrKeyFile);
+}
+
+
+/* return the current default netstream driver certificate File */
+static uchar*
+GetDfltNetstrmDrvrCertFile(void)
+{
+	return(pszDfltNetstrmDrvrCertFile);
+}
+
+
+/* queryInterface function
+ * rgerhards, 2008-02-21
+ */
+BEGINobjQueryInterface(glbl)
+CODESTARTobjQueryInterface(glbl)
+	if(pIf->ifVersion != glblCURR_IF_VERSION) { /* check for current version, increment on each change */
+		ABORT_FINALIZE(RS_RET_INTERFACE_NOT_SUPPORTED);
+	}
+
+	/* ok, we have the right interface, so let's fill it
+	 * Please note that we may also do some backwards-compatibility
+	 * work here (if we can support an older interface version - that,
+	 * of course, also affects the "if" above).
+	 */
+	pIf->GetWorkDir = GetWorkDir;
+#define SIMP_PROP(name) \
+	pIf->Get##name = Get##name; \
+	pIf->Set##name = Set##name;
+	SIMP_PROP(DefPFFamily);
+	SIMP_PROP(DropMalPTRMsgs);
+	SIMP_PROP(Option_DisallowWarning);
+	SIMP_PROP(DisableDNS);
+	SIMP_PROP(LocalHostName)
+	SIMP_PROP(LocalDomain)
+	SIMP_PROP(StripDomains)
+	SIMP_PROP(LocalHosts)
+	SIMP_PROP(DfltNetstrmDrvr)
+	SIMP_PROP(DfltNetstrmDrvrCAF)
+	SIMP_PROP(DfltNetstrmDrvrKeyFile)
+	SIMP_PROP(DfltNetstrmDrvrCertFile)
+#undef	SIMP_PROP
+finalize_it:
+ENDobjQueryInterface(glbl)
+
+
+/* Reset config variables to default values.
+ * rgerhards, 2008-04-17
+ */
+static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal)
+{
+	if(pszDfltNetstrmDrvr != NULL) {
+		free(pszDfltNetstrmDrvr);
+		pszDfltNetstrmDrvr = NULL;
+	}
+	if(pszDfltNetstrmDrvrCAF != NULL) {
+		free(pszDfltNetstrmDrvrCAF);
+		pszDfltNetstrmDrvrCAF = NULL;
+	}
+	if(pszDfltNetstrmDrvrKeyFile != NULL) {
+		free(pszDfltNetstrmDrvrKeyFile);
+		pszDfltNetstrmDrvrKeyFile = NULL;
+	}
+	if(pszDfltNetstrmDrvrCertFile != NULL) {
+		free(pszDfltNetstrmDrvrCertFile);
+		pszDfltNetstrmDrvrCertFile = NULL;
+	}
+	if(pszWorkDir != NULL) {
+		free(pszWorkDir);
+		pszWorkDir = NULL;
+	}
+	bDropMalPTRMsgs = 0;
+	return RS_RET_OK;
+}
+
+
+
+/* Initialize the glbl class. Must be called as the very first method
+ * before anything else is called inside this class.
+ * rgerhards, 2008-02-19
+ */
+BEGINAbstractObjClassInit(glbl, 1, OBJ_IS_CORE_MODULE) /* class, version */
+	/* request objects we use */
+
+	/* register config handlers (TODO: we need to implement a way to unregister them) */
+	CHKiRet(regCfSysLineHdlr((uchar *)"workdirectory", 0, eCmdHdlrGetWord, NULL, &pszWorkDir, NULL));
+	CHKiRet(regCfSysLineHdlr((uchar *)"dropmsgswithmaliciousdnsptrrecords", 0, eCmdHdlrBinary, NULL, &bDropMalPTRMsgs, NULL));
+	CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdriver", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvr, NULL));
+	CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdrivercafile", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvrCAF, NULL));
+	CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdriverkeyfile", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvrKeyFile, NULL));
+	CHKiRet(regCfSysLineHdlr((uchar *)"defaultnetstreamdrivercertfile", 0, eCmdHdlrGetWord, NULL, &pszDfltNetstrmDrvrCertFile, NULL));
+	CHKiRet(regCfSysLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, NULL, NULL));
+ENDObjClassInit(glbl)
+
+
+/* Exit the glbl class.
+ * rgerhards, 2008-04-17
+ */
+BEGINObjClassExit(glbl, OBJ_IS_CORE_MODULE) /* class, version */
+	if(pszDfltNetstrmDrvr != NULL)
+		free(pszDfltNetstrmDrvr);
+	if(pszDfltNetstrmDrvrCAF != NULL)
+		free(pszDfltNetstrmDrvrCAF);
+	if(pszDfltNetstrmDrvrKeyFile != NULL)
+		free(pszDfltNetstrmDrvrKeyFile);
+	if(pszDfltNetstrmDrvrCertFile != NULL)
+		free(pszDfltNetstrmDrvrCertFile);
+	if(pszWorkDir != NULL)
+		free(pszWorkDir);
+	if(LocalHostName != NULL)
+		free(LocalHostName);
+ENDObjClassExit(glbl)
+
+/* vi:set ai:
+ */