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-rw-r--r--runtime/msg.c121
1 files changed, 104 insertions, 17 deletions
diff --git a/runtime/msg.c b/runtime/msg.c
index 623c5b4a..0597ea84 100644
--- a/runtime/msg.c
+++ b/runtime/msg.c
@@ -35,6 +35,8 @@
#include <string.h>
#include <assert.h>
#include <ctype.h>
+#include <sys/socket.h>
+#include <netdb.h>
#if HAVE_MALLOC_H
# include <malloc.h>
#endif
@@ -51,6 +53,7 @@
#include "unicode-helper.h"
#include "ruleset.h"
#include "prop.h"
+#include "net.h"
/* static data */
DEFobjStaticHelpers
@@ -59,6 +62,7 @@ DEFobjCurrIf(datetime)
DEFobjCurrIf(glbl)
DEFobjCurrIf(regexp)
DEFobjCurrIf(prop)
+DEFobjCurrIf(net)
static struct {
uchar *pszName;
@@ -284,6 +288,41 @@ static inline int getProtocolVersion(msg_t *pM)
}
+/* do a DNS reverse resolution, if not already done, reflect status
+ * rgerhards, 2009-11-16
+ */
+static inline rsRetVal
+resolveDNS(msg_t *pMsg) {
+ rsRetVal localRet;
+ prop_t *propFromHost = NULL;
+ prop_t *propFromHostIP = NULL;
+ uchar fromHost[NI_MAXHOST];
+ uchar fromHostIP[NI_MAXHOST];
+ uchar fromHostFQDN[NI_MAXHOST];
+ DEFiRet;
+
+ CHKiRet(objUse(net, CORE_COMPONENT));
+ if(pMsg->msgFlags & NEEDS_DNSRESOL) {
+ localRet = net.cvthname(pMsg->rcvFrom.pfrominet, fromHost, fromHostFQDN, fromHostIP);
+ if(localRet == RS_RET_OK) {
+ MsgSetRcvFromStr(pMsg, fromHost, ustrlen(fromHost), &propFromHost);
+ CHKiRet(MsgSetRcvFromIPStr(pMsg, fromHostIP, ustrlen(fromHostIP), &propFromHostIP));
+ }
+ }
+finalize_it:
+ if(iRet != RS_RET_OK) {
+ /* best we can do: remove property */
+ MsgSetRcvFromStr(pMsg, UCHAR_CONSTANT(""), 0, &propFromHost);
+ prop.Destruct(&propFromHost);
+ }
+ if(propFromHost != NULL)
+ prop.Destruct(&propFromHost);
+ if(propFromHostIP != NULL)
+ prop.Destruct(&propFromHostIP);
+ RETiRet;
+}
+
+
static inline void
getInputName(msg_t *pM, uchar **ppsz, int *plen)
{
@@ -307,6 +346,7 @@ getRcvFromIP(msg_t *pM)
if(pM == NULL) {
psz = UCHAR_CONSTANT("");
} else {
+ resolveDNS(pM); /* make sure we have a resolved entry */
if(pM->pRcvFromIP == NULL)
psz = UCHAR_CONSTANT("");
else
@@ -660,7 +700,7 @@ static inline rsRetVal msgBaseConstruct(msg_t **ppThis)
pM->pCSMSGID = NULL;
pM->pInputName = NULL;
pM->pRcvFromIP = NULL;
- pM->pRcvFrom = NULL;
+ pM->rcvFrom.pRcvFrom = NULL;
pM->pRuleset = NULL;
memset(&pM->tRcvdAt, 0, sizeof(pM->tRcvdAt));
memset(&pM->tTIMESTAMP, 0, sizeof(pM->tTIMESTAMP));
@@ -761,8 +801,12 @@ CODESTARTobjDestruct(msg)
freeHOSTNAME(pThis);
if(pThis->pInputName != NULL)
prop.Destruct(&pThis->pInputName);
- if(pThis->pRcvFrom != NULL)
- prop.Destruct(&pThis->pRcvFrom);
+ if((pThis->msgFlags & NEEDS_DNSRESOL) == 0) {
+ if(pThis->rcvFrom.pRcvFrom != NULL)
+ prop.Destruct(&pThis->rcvFrom.pRcvFrom);
+ } else {
+ free(pThis->rcvFrom.pfrominet);
+ }
if(pThis->pRcvFromIP != NULL)
prop.Destruct(&pThis->pRcvFromIP);
free(pThis->pszRcvdAt3164);
@@ -848,6 +892,7 @@ ENDobjDestruct(msg)
msg_t* MsgDup(msg_t* pOld)
{
msg_t* pNew;
+ rsRetVal localRet;
assert(pOld != NULL);
@@ -868,9 +913,19 @@ msg_t* MsgDup(msg_t* pOld)
pNew->iLenMSG = pOld->iLenMSG;
pNew->iLenTAG = pOld->iLenTAG;
pNew->iLenHOSTNAME = pOld->iLenHOSTNAME;
- if(pOld->pRcvFrom != NULL) {
- pNew->pRcvFrom = pOld->pRcvFrom;
- prop.AddRef(pNew->pRcvFrom);
+ if((pOld->msgFlags & NEEDS_DNSRESOL) == 1) {
+ localRet = msgSetFromSockinfo(pNew, pOld->rcvFrom.pfrominet);
+ if(localRet != RS_RET_OK) {
+ /* if something fails, we accept loss of this property, it is
+ * better than losing the whole message.
+ */
+ pNew->msgFlags &= ~NEEDS_DNSRESOL;
+ }
+ } else {
+ if(pOld->rcvFrom.pRcvFrom != NULL) {
+ pNew->rcvFrom.pRcvFrom = pOld->rcvFrom.pRcvFrom;
+ prop.AddRef(pNew->rcvFrom.pRcvFrom);
+ }
}
if(pOld->pRcvFromIP != NULL) {
pNew->pRcvFromIP = pOld->pRcvFromIP;
@@ -1648,12 +1703,13 @@ int getHOSTNAMELen(msg_t *pM)
if(pM == NULL)
return 0;
else
- if(pM->pszHOSTNAME == NULL)
- if(pM->pRcvFrom == NULL)
+ if(pM->pszHOSTNAME == NULL) {
+ resolveDNS(pM);
+ if(pM->rcvFrom.pRcvFrom == NULL)
return 0;
else
- return prop.GetStringLen(pM->pRcvFrom);
- else
+ return prop.GetStringLen(pM->rcvFrom.pRcvFrom);
+ } else
return pM->iLenHOSTNAME;
}
@@ -1664,12 +1720,13 @@ char *getHOSTNAME(msg_t *pM)
return "";
else
if(pM->pszHOSTNAME == NULL) {
- if(pM->pRcvFrom == NULL) {
+ resolveDNS(pM);
+ if(pM->rcvFrom.pRcvFrom == NULL) {
return "";
} else {
uchar *psz;
int len;
- prop.GetString(pM->pRcvFrom, &psz, &len);
+ prop.GetString(pM->rcvFrom.pRcvFrom, &psz, &len);
return (char*) psz;
}
} else {
@@ -1683,13 +1740,15 @@ uchar *getRcvFrom(msg_t *pM)
uchar *psz;
int len;
BEGINfunc
+
if(pM == NULL) {
psz = UCHAR_CONSTANT("");
} else {
- if(pM->pRcvFrom == NULL)
+ resolveDNS(pM);
+ if(pM->rcvFrom.pRcvFrom == NULL)
psz = UCHAR_CONSTANT("");
else
- prop.GetString(pM->pRcvFrom, &psz, &len);
+ prop.GetString(pM->rcvFrom.pRcvFrom, &psz, &len);
}
ENDfunc
return psz;
@@ -1845,6 +1904,28 @@ void MsgSetInputName(msg_t *pThis, prop_t *inputName)
}
+/* Set the pfrominet socket store, so that we can obtain the peer at some
+ * later time. Note that we do not check if pRcvFrom is already set, so this
+ * function must only be called during message creation.
+ * NOTE: msgFlags is NOT set. While this is somewhat a violation of layers,
+ * it is done because it gains us some performance. So the caller must make
+ * sure the message flags are properly maintained. For all current callers,
+ * this is always the case and without extra effort required.
+ * rgerhards, 2009-11-17
+ */
+rsRetVal
+msgSetFromSockinfo(msg_t *pThis, struct sockaddr_storage *sa){
+ DEFiRet;
+ assert(pThis->rcvFrom.pRcvFrom == NULL);
+
+ CHKmalloc(pThis->rcvFrom.pfrominet = malloc(sizeof(struct sockaddr_storage)));
+ memcpy(pThis->rcvFrom.pfrominet, sa, sizeof(struct sockaddr_storage));
+
+finalize_it:
+ RETiRet;
+}
+
+
/* rgerhards 2008-09-10: set RcvFrom name in msg object. This calls AddRef()
* on the property, because this must be done in all current cases and there
* is no case expected where this may not be necessary.
@@ -1855,9 +1936,15 @@ void MsgSetRcvFrom(msg_t *pThis, prop_t *new)
assert(pThis != NULL);
prop.AddRef(new);
- if(pThis->pRcvFrom != NULL)
- prop.Destruct(&pThis->pRcvFrom);
- pThis->pRcvFrom = new;
+ if(pThis->msgFlags & NEEDS_DNSRESOL) {
+ if(pThis->rcvFrom.pfrominet != NULL)
+ free(pThis->rcvFrom.pfrominet);
+ pThis->msgFlags &= ~NEEDS_DNSRESOL;
+ } else {
+ if(pThis->rcvFrom.pRcvFrom != NULL)
+ prop.Destruct(&pThis->rcvFrom.pRcvFrom);
+ }
+ pThis->rcvFrom.pRcvFrom = new;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-09 18:42:43 +0000