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-rw-r--r--plugins/imuxsock/imuxsock.c88
1 files changed, 73 insertions, 15 deletions
diff --git a/plugins/imuxsock/imuxsock.c b/plugins/imuxsock/imuxsock.c
index 05bcb642..d94ee34c 100644
--- a/plugins/imuxsock/imuxsock.c
+++ b/plugins/imuxsock/imuxsock.c
@@ -73,12 +73,16 @@ static int startIndexUxLocalSockets; /* process funix from that index on (used t
static int funixParseHost[MAXFUNIX] = { 0, }; /* should parser parse host name? read-only after startup */
static int funixFlags[MAXFUNIX] = { ADDDATE, }; /* should parser parse host name? read-only after startup */
static uchar *funixn[MAXFUNIX] = { (uchar*) _PATH_LOG }; /* read-only after startup */
+static uchar *funixHName[MAXFUNIX] = { NULL, }; /* host-name override - if set, use this instead of actual name */
+static int funixFlowCtl[MAXFUNIX] = { eFLOWCTL_NO_DELAY, }; /* flow control settings for this socket */
static int funix[MAXFUNIX] = { -1, }; /* read-only after startup */
static int nfunix = 1; /* number of Unix sockets open / read-only after startup */
/* config settings */
static int bOmitLocalLogging = 0;
static uchar *pLogSockName = NULL;
+static uchar *pLogHostName = NULL; /* host name to use with this socket */
+static int bUseFlowCtl = 0; /* use flow control or not (if yes, only LIGHT is used! */
static int bIgnoreTimestamp = 1; /* ignore timestamps present in the incoming message? */
@@ -93,6 +97,14 @@ static rsRetVal setSystemLogTimestampIgnore(void __attribute__((unused)) *pVal,
RETiRet;
}
+/* set flowcontrol for the system log socket
+ */
+static rsRetVal setSystemLogFlowControl(void __attribute__((unused)) *pVal, int iNewVal)
+{
+ DEFiRet;
+ funixFlowCtl[0] = iNewVal ? eFLOWCTL_LIGHT_DELAY : eFLOWCTL_NO_DELAY;
+ RETiRet;
+}
/* add an additional listen socket. Socket names are added
* until the array is filled up. It is never reset, only at
@@ -100,6 +112,7 @@ static rsRetVal setSystemLogTimestampIgnore(void __attribute__((unused)) *pVal,
* TODO: we should change the array to a list so that we
* can support any number of listen socket names.
* rgerhards, 2007-12-20
+ * added capability to specify hostname for socket -- rgerhards, 2008-08-01
*/
static rsRetVal addLstnSocketName(void __attribute__((unused)) *pVal, uchar *pNewVal)
{
@@ -110,6 +123,9 @@ static rsRetVal addLstnSocketName(void __attribute__((unused)) *pVal, uchar *pNe
else {
funixParseHost[nfunix] = 0;
}
+ funixHName[nfunix] = pLogHostName;
+ pLogHostName = NULL; /* re-init for next, not freed because funixHName[] now owns it */
+ funixFlowCtl[nfunix] = bUseFlowCtl ? eFLOWCTL_LIGHT_DELAY : eFLOWCTL_NO_DELAY;
funixFlags[nfunix] = bIgnoreTimestamp ? ADDDATE : NOFLAG;
funixn[nfunix++] = pNewVal;
}
@@ -134,6 +150,10 @@ static rsRetVal discardFunixn(void)
free(funixn[i]);
funixn[i] = NULL;
}
+ if(funixHName[i] != NULL) {
+ free(funixHName[i]);
+ funixHName[i] = NULL;
+ }
}
return RS_RET_OK;
@@ -144,7 +164,6 @@ static int create_unix_socket(const char *path)
{
struct sockaddr_un sunx;
int fd;
- char line[MAXLINE +1];
if (path[0] == '\0')
return -1;
@@ -155,11 +174,9 @@ static int create_unix_socket(const char *path)
sunx.sun_family = AF_UNIX;
(void) strncpy(sunx.sun_path, path, sizeof(sunx.sun_path));
fd = socket(AF_UNIX, SOCK_DGRAM, 0);
- if (fd < 0 || bind(fd, (struct sockaddr *) &sunx,
- SUN_LEN(&sunx)) < 0 ||
+ if (fd < 0 || bind(fd, (struct sockaddr *) &sunx, SUN_LEN(&sunx)) < 0 ||
chmod(path, 0666) < 0) {
- snprintf(line, sizeof(line), "cannot create %s", path);
- errmsg.LogError(errno, NO_ERRCODE, "%s", line);
+ errmsg.LogError(errno, NO_ERRCODE, "connot create '%s'", path);
dbgprintf("cannot create %s (%d).\n", path, errno);
close(fd);
return -1;
@@ -171,18 +188,40 @@ static int create_unix_socket(const char *path)
/* This function receives data from a socket indicated to be ready
* to receive and submits the message received for processing.
* rgerhards, 2007-12-20
+ * Interface changed so that this function is passed the array index
+ * of the socket which is to be processed. This eases access to the
+ * growing number of properties. -- rgerhards, 2008-08-01
*/
-static rsRetVal readSocket(int fd, int bParseHost, int flags)
+static rsRetVal readSocket(int fd, int iSock)
{
DEFiRet;
int iRcvd;
- uchar line[MAXLINE +1];
+ int iMaxLine;
+ uchar bufRcv[4096+1];
+ uchar *pRcv = NULL; /* receive buffer */
+
+ assert(iSock >= 0);
+
+ iMaxLine = glbl.GetMaxLine();
- iRcvd = recv(fd, line, MAXLINE - 1, 0);
+ /* we optimize performance: if iMaxLine is below 4K (which it is in almost all
+ * cases, we use a fixed buffer on the stack. Only if it is higher, heap memory
+ * is used. We could use alloca() to achive a similar aspect, but there are so
+ * many issues with alloca() that I do not want to take that route.
+ * rgerhards, 2008-09-02
+ */
+ if((size_t) iMaxLine < sizeof(bufRcv) - 1) {
+ pRcv = bufRcv;
+ } else {
+ CHKmalloc(pRcv = (uchar*) malloc(sizeof(uchar) * (iMaxLine + 1)));
+ }
+
+ iRcvd = recv(fd, pRcv, iMaxLine, 0);
dbgprintf("Message from UNIX socket: #%d\n", fd);
if (iRcvd > 0) {
- parseAndSubmitMessage(glbl.GetLocalHostName(), (uchar*)"127.0.0.1", line,
- iRcvd, bParseHost, flags, eFLOWCTL_NO_DELAY);
+ parseAndSubmitMessage(funixHName[iSock] == NULL ? glbl.GetLocalHostName() : funixHName[iSock],
+ (uchar*)"127.0.0.1", pRcv,
+ iRcvd, funixParseHost[iSock], funixFlags[iSock], funixFlowCtl[iSock], (uchar*)"imuxsock");
} else if (iRcvd < 0 && errno != EINTR) {
char errStr[1024];
rs_strerror_r(errno, errStr, sizeof(errStr));
@@ -190,12 +229,15 @@ static rsRetVal readSocket(int fd, int bParseHost, int flags)
errmsg.LogError(errno, NO_ERRCODE, "recvfrom UNIX");
}
+finalize_it:
+ if(pRcv != NULL && (size_t) iMaxLine >= sizeof(bufRcv) - 1)
+ free(pRcv);
+
RETiRet;
}
-/* This function is called to gather input.
- */
+/* This function is called to gather input. */
BEGINrunInput
int maxfds;
int nfds;
@@ -237,7 +279,7 @@ CODESTARTrunInput
for (i = 0; i < nfunix && nfds > 0; i++) {
if ((fd = funix[i]) != -1 && FD_ISSET(fd, &readfds)) {
- readSocket(fd, funixParseHost[i], funixFlags[i]);
+ readSocket(fd, i);
--nfds; /* indicate we have processed one */
}
}
@@ -282,6 +324,9 @@ CODESTARTafterRun
/* free no longer needed string */
if(pLogSockName != NULL)
free(pLogSockName);
+ if(pLogHostName != NULL) {
+ free(pLogHostName);
+ }
discardFunixn();
nfunix = 1;
@@ -307,10 +352,15 @@ static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __a
free(pLogSockName);
pLogSockName = NULL;
}
+ if(pLogHostName != NULL) {
+ free(pLogHostName);
+ pLogHostName = NULL;
+ }
discardFunixn();
nfunix = 1;
bIgnoreTimestamp = 1;
+ bUseFlowCtl = 0;
return RS_RET_OK;
}
@@ -324,6 +374,8 @@ CODEmodInit_QueryRegCFSLineHdlr
CHKiRet(objUse(errmsg, CORE_COMPONENT));
CHKiRet(objUse(glbl, CORE_COMPONENT));
+ dbgprintf("imuxsock version %s initializing\n", PACKAGE_VERSION);
+
/* initialize funixn[] array */
for(i = 1 ; i < MAXFUNIX ; ++i) {
funixn[i] = NULL;
@@ -337,18 +389,24 @@ CODEmodInit_QueryRegCFSLineHdlr
NULL, &bIgnoreTimestamp, STD_LOADABLE_MODULE_ID));
CHKiRet(omsdRegCFSLineHdlr((uchar *)"systemlogsocketname", 0, eCmdHdlrGetWord,
NULL, &pLogSockName, STD_LOADABLE_MODULE_ID));
+ CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensockethostname", 0, eCmdHdlrGetWord,
+ NULL, &pLogHostName, STD_LOADABLE_MODULE_ID));
+ CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketflowcontrol", 0, eCmdHdlrBinary,
+ NULL, &bUseFlowCtl, STD_LOADABLE_MODULE_ID));
CHKiRet(omsdRegCFSLineHdlr((uchar *)"addunixlistensocket", 0, eCmdHdlrGetWord,
addLstnSocketName, NULL, STD_LOADABLE_MODULE_ID));
CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler,
resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID));
/* the following one is a (dirty) trick: the system log socket is not added via
- * an "addUnixListenSocket" config format. As such, the timestamp can not be modified
- * via $InputUnixListenSocketIgnoreMsgTimestamp". So we need to add a special directive
+ * an "addUnixListenSocket" config format. As such, it's properties can not be modified
+ * via $InputUnixListenSocket*". So we need to add a special directive
* for that. We should revisit all of that once we have the new config format...
* rgerhards, 2008-03-06
*/
CHKiRet(omsdRegCFSLineHdlr((uchar *)"systemlogsocketignoremsgtimestamp", 0, eCmdHdlrBinary,
setSystemLogTimestampIgnore, NULL, STD_LOADABLE_MODULE_ID));
+ CHKiRet(omsdRegCFSLineHdlr((uchar *)"systemlogsocketflowcontrol", 0, eCmdHdlrBinary,
+ setSystemLogFlowControl, NULL, STD_LOADABLE_MODULE_ID));
ENDmodInit
/* vim:set ai:
*/
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-25 22:01:04 +0000