summaryrefslogtreecommitdiffstats
path: root/plugins/imtcp
diff options
context:
space:
mode:
authorRainer Gerhards <rgerhards@adiscon.com>2007-12-21 14:37:50 +0000
committerRainer Gerhards <rgerhards@adiscon.com>2007-12-21 14:37:50 +0000
commit4e6bba7df8170514183040897e363528c574be0e (patch)
tree60fc7da7ba8c7627347ba5d6bdae5b64fe1eb9f1 /plugins/imtcp
parent783d2c0368b7992822bfea3a981e56bf063b188a (diff)
downloadrsyslog-4e6bba7df8170514183040897e363528c574be0e.tar.gz
rsyslog-4e6bba7df8170514183040897e363528c574be0e.tar.xz
rsyslog-4e6bba7df8170514183040897e363528c574be0e.zip
created first version of imtcp (still very much depending on syslogd.c for
configuration and a lot of other things)
Diffstat (limited to 'plugins/imtcp')
-rw-r--r--plugins/imtcp/imtcp.c140
1 files changed, 133 insertions, 7 deletions
diff --git a/plugins/imtcp/imtcp.c b/plugins/imtcp/imtcp.c
index 96686811..ef0912e9 100644
--- a/plugins/imtcp/imtcp.c
+++ b/plugins/imtcp/imtcp.c
@@ -26,18 +26,16 @@
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#include "config.h"
-#include "rsyslog.h"
#include <stdlib.h>
-#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/un.h>
+#include "rsyslog.h"
#include "syslogd.h"
#include "cfsysline.h"
#include "module-template.h"
+#include "tcpsyslog.h"
MODULE_TYPE_INPUT
TERM_SYNC_TYPE(eTermSync_NONE)
@@ -59,7 +57,7 @@ BEGINrunInput
int maxfds;
int nfds;
int i;
- int fd;
+ int iTCPSess;
fd_set readfds;
CODESTARTrunInput
/* this is an endless loop - it is terminated when the thread is
@@ -76,17 +74,119 @@ CODESTARTrunInput
maxfds = 0;
FD_ZERO (&readfds);
+ /* Add the TCP listen sockets to the list of read descriptors.
+ */
+ if(sockTCPLstn != NULL && *sockTCPLstn) {
+ for (i = 0; i < *sockTCPLstn; i++) {
+ /* The if() below is theoretically not needed, but I leave it in
+ * so that a socket may become unsuable during execution. That
+ * feature is not yet supported by the current code base.
+ */
+ if (sockTCPLstn[i+1] != -1) {
+ if(Debug)
+ debugListenInfo(sockTCPLstn[i+1], "TCP");
+ FD_SET(sockTCPLstn[i+1], &readfds);
+ if(sockTCPLstn[i+1]>maxfds) maxfds=sockTCPLstn[i+1];
+ }
+ }
+ /* do the sessions */
+ iTCPSess = TCPSessGetNxtSess(-1);
+ while(iTCPSess != -1) {
+ int fdSess;
+ fdSess = pTCPSessions[iTCPSess].sock;
+ dbgprintf("Adding TCP Session %d\n", fdSess);
+ FD_SET(fdSess, &readfds);
+ if (fdSess>maxfds) maxfds=fdSess;
+ /* now get next... */
+ iTCPSess = TCPSessGetNxtSess(iTCPSess);
+ }
+ }
+
if(Debug) {
dbgprintf("--------imTCP calling select, active file descriptors (max %d): ", maxfds);
- for (nfds= 0; nfds <= maxfds; ++nfds)
+ for (nfds = 0; nfds <= maxfds; ++nfds)
if ( FD_ISSET(nfds, &readfds) )
dbgprintf("%d ", nfds);
dbgprintf("\n");
}
/* wait for io to become ready */
- /* select here */
+ nfds = select(maxfds+1, (fd_set *) &readfds, NULL, NULL, NULL);
+
+ for (i = 0; i < *sockTCPLstn; i++) {
+ if (FD_ISSET(sockTCPLstn[i+1], &readfds)) {
+ dbgprintf("New connect on TCP inetd socket: #%d\n", sockTCPLstn[i+1]);
+# ifdef USE_GSSAPI
+ if(bEnableTCP & ALLOWEDMETHOD_GSS)
+ TCPSessGSSAccept(sockTCPLstn[i+1]);
+ else
+# endif
+ TCPSessAccept(sockTCPLstn[i+1]);
+ --nfds; /* indicate we have processed one */
+ }
+ }
+
+ /* now check the sessions */
+ iTCPSess = TCPSessGetNxtSess(-1);
+ while(nfds && iTCPSess != -1) {
+ int fdSess;
+ int state;
+ fdSess = pTCPSessions[iTCPSess].sock;
+ if(FD_ISSET(fdSess, &readfds)) {
+ char buf[MAXLINE];
+ dbgprintf("tcp session socket with new data: #%d\n", fdSess);
+ /* Receive message */
+# ifdef USE_GSSAPI
+ int allowedMethods = pTCPSessions[iTCPSess].allowedMethods;
+ if(allowedMethods & ALLOWEDMETHOD_GSS)
+ state = TCPSessGSSRecv(iTCPSess, buf, sizeof(buf));
+ else
+# endif
+ state = recv(fdSess, buf, sizeof(buf), 0);
+ if(state == 0) {
+# ifdef USE_GSSAPI
+ if(allowedMethods & ALLOWEDMETHOD_GSS)
+ TCPSessGSSClose(iTCPSess);
+ else {
+# endif
+ /* process any incomplete frames left over */
+ TCPSessPrepareClose(iTCPSess);
+ /* Session closed */
+ TCPSessClose(iTCPSess);
+# ifdef USE_GSSAPI
+ }
+# endif
+ } else if(state == -1) {
+ logerrorInt("TCP session %d will be closed, error ignored\n",
+ fdSess);
+# ifdef USE_GSSAPI
+ if(allowedMethods & ALLOWEDMETHOD_GSS)
+ TCPSessGSSClose(iTCPSess);
+ else
+# endif
+ TCPSessClose(iTCPSess);
+ } else {
+ /* valid data received, process it! */
+ if(TCPSessDataRcvd(iTCPSess, buf, state) == 0) {
+ /* in this case, something went awfully wrong.
+ * We are instructed to terminate the session.
+ */
+ logerrorInt("Tearing down TCP Session %d - see "
+ "previous messages for reason(s)\n",
+ iTCPSess);
+# ifdef USE_GSSAPI
+ if(allowedMethods & ALLOWEDMETHOD_GSS)
+ TCPSessGSSClose(iTCPSess);
+ else
+# endif
+ TCPSessClose(iTCPSess);
+ }
+ }
+ --nfds; /* indicate we have processed one */
+ }
+ iTCPSess = TCPSessGetNxtSess(iTCPSess);
+ }
}
return iRet;
@@ -97,6 +197,29 @@ ENDrunInput
BEGINwillRun
CODESTARTwillRun
/* first apply some config settings */
+dbgprintf("imtcp: bEnableTCP %d\n", bEnableTCP);
+ if (bEnableTCP) {
+ if(sockTCPLstn == NULL) {
+ /* even when doing a re-init, we do not shut down and
+ * re-open the TCP socket. That would break existing TCP
+ * session, which we do not desire. Should at some time arise
+ * need to do that, I recommend controlling that via a
+ * user-selectable option. rgerhards, 2007-06-21
+ */
+# ifdef USE_GSSAPI
+ if(bEnableTCP & ALLOWEDMETHOD_GSS) {
+ if(TCPSessGSSInit()) {
+ logerror("GSS-API initialization failed\n");
+ bEnableTCP &= ~(ALLOWEDMETHOD_GSS);
+ }
+ }
+ if(bEnableTCP)
+# endif
+ if((sockTCPLstn = create_tcp_socket()) != NULL) {
+ dbgprintf("Opened %d syslog TCP port(s).\n", *sockTCPLstn);
+ }
+ }
+ }
ENDwillRun
@@ -140,6 +263,9 @@ CODEmodInit_QueryRegCFSLineHdlr
/* register config file handlers */
//CHKiRet(omsdRegCFSLineHdlr((uchar *)"omitlocallogging", 0, eCmdHdlrBinary,
// NULL, &bOmitLocalLogging, STD_LOADABLE_MODULE_ID));
+#if defined(USE_GSSAPI)
+ CHKiRet(regCfSysLineHdlr((uchar *)"gsslistenservicename", 0, eCmdHdlrGetWord, NULL, &gss_listen_service_name, NULL));
+#endif
CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler,
resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID));
ENDmodInit