applied patch form varmojfekoj to fix some mem leaks and a check to make

    sure that an empty string (NULL) returned by the CStr class does not
    cause a program abort.

3 files changed, 33 insertions, 6 deletions

diff --git a/msg.c b/msg.c
index be3c48ae..80cdb09e 100644
--- a/msg.c
+++ b/msg.c
@@ -126,6 +126,14 @@ void MsgDestruct(msg_t * pM)
 			free(pM->pszTIMESTAMP_MySQL);
 		if(pM->pszPRI != NULL)
 			free(pM->pszPRI);
+		if(pM->pCSProgName != NULL)
+			rsCStrDestruct(pM->pCSProgName);
+		if(pM->pCSStrucData != NULL)
+			rsCStrDestruct(pM->pCSStrucData);
+		if(pM->pCSPROCID != NULL)
+			rsCStrDestruct(pM->pCSPROCID);
+		if(pM->pCSMSGID != NULL)
+			rsCStrDestruct(pM->pCSMSGID);
 		free(pM);
 	}
 	MsgUnlock();
diff --git a/syslogd.c b/syslogd.c
index 65af51e8..8824cc04 100644
--- a/syslogd.c
+++ b/syslogd.c
@@ -1844,6 +1844,18 @@ static rsRetVal selectorDestruct(void *pVal)
 
 	assert(pThis != NULL);
 
+	if(pThis->pCSHostnameComp != NULL)
+		rsCStrDestruct(pThis->pCSHostnameComp);
+	if(pThis->pCSProgNameComp != NULL)
+		rsCStrDestruct(pThis->pCSProgNameComp);
+
+	if(pThis->f_filter_type == FILTER_PROP) {
+		if(pThis->f_filterData.prop.pCSPropName != NULL)
+			rsCStrDestruct(pThis->f_filterData.prop.pCSPropName);
+		if(pThis->f_filterData.prop.pCSCompValue != NULL)
+			rsCStrDestruct(pThis->f_filterData.prop.pCSCompValue);
+	}
+
 	llDestroy(&pThis->llActList);
 	free(pThis);
 	
@@ -4807,7 +4819,6 @@ static rsRetVal cflineProcessHostSelector(uchar **pline)
 		if(pDfltHostnameCmp != NULL) {
 			if((iRet = rsCStrSetSzStr(pDfltHostnameCmp, NULL)) != RS_RET_OK)
 				return(iRet);
-			pDfltHostnameCmp = NULL;
 		}
 	} else {
 		dbgprintf("setting BSD-like hostname filter to '%s'\n", *pline);
@@ -4852,7 +4863,6 @@ static rsRetVal cflineProcessTagSelector(uchar **pline)
 		if(pDfltProgNameCmp != NULL) {
 			if((iRet = rsCStrSetSzStr(pDfltProgNameCmp, NULL)) != RS_RET_OK)
 				return(iRet);
-			pDfltProgNameCmp = NULL;
 		}
 	} else {
 		dbgprintf("setting programname filter to '%s'\n", *pline);
diff --git a/template.c b/template.c
index d2f2450a..7f9c70f0 100644
--- a/template.c
+++ b/template.c
@@ -108,7 +108,11 @@ uchar *tplToString(struct template *pTpl, msg_t *pMsg)
 	 * "real" (usable) string and discard the helper structures.
 	 */
 	rsCStrFinish(pCStr);
-	return rsCStrConvSzStrAndDestruct(pCStr);
+	if((pVal = rsCStrConvSzStrAndDestruct(pCStr)) == NULL) {
+		pVal = malloc(1);
+		*pVal = '\0';
+	}
+	return pVal;
 }
 
 /* Helper to doSQLEscape. This is called if doSQLEscape
@@ -293,7 +297,7 @@ struct template* tplConstruct(void)
  */
 static int do_Constant(unsigned char **pp, struct template *pTpl)
 {
-	register unsigned char *p;
+	register unsigned char *p, *s;
 	rsCStrObj *pStrB;
 	struct templateEntry *pTpe;
 	int i;
@@ -373,8 +377,13 @@ static int do_Constant(unsigned char **pp, struct template *pTpl)
 	 * benefit from the counted string object.
 	 * 2005-09-09 rgerhards
 	 */
-	pTpe->data.constant.iLenConstant = rsCStrLen(pStrB);
-	pTpe->data.constant.pConstant = (char*) rsCStrConvSzStrAndDestruct(pStrB);
+	if ((pTpe->data.constant.iLenConstant = rsCStrLen(pStrB)) == 0) {
+		s = malloc(1);
+		*s = '\0';
+		rsCStrDestruct(pStrB);
+	} else
+		s = rsCStrConvSzStrAndDestruct(pStrB);
+	pTpe->data.constant.pConstant = (char*) s;
 
 	*pp = p;