1 files changed, 118 insertions, 0 deletions
diff --git a/ntpsnmpd/ntpsnmpd.c b/ntpsnmpd/ntpsnmpd.c
new file mode 100644
index 0000000..d96ad3a
--- /dev/null
+++ b/ntpsnmpd/ntpsnmpd.c
@@ -0,0 +1,118 @@
+/*****************************************************************************
+ *
+ *  ntpsnmpd.c
+ *
+ *  The NTP SNMP daemon is an Agent X subagent application that 
+ *  registers itself with a running SNMP Agent X master process running
+ *  on the same machine on port TCP 705. It utilizes the libntqp library
+ *  which accesses status and general data of a running ntpd process on
+ *  the same machine and enables the user to monitor the status of a
+ *  ntp daemon process via SNMP. 
+ *
+ *  This started as a Google Summer of Code 2008 project, 
+ *  including the ntpsnmpd sub agent and the libntpq library. 
+ *
+ *  For more information please visit
+ *	http://support.ntp.org/bin/view/Dev/GSoC2008snmp
+ *  Or contact:
+ *   Harlan Stenn   (Mentor) at stenn@ntp.org
+ *   Heiko Gerstung (Student) at gerstung@ntp.org 
+ *
+ ****************************************************************************/
+
+#include <ntp_snmp.h>
+#include <signal.h>
+#include <sys/time.h>
+
+#ifdef SOLARIS /* needed with at least Solaris 8 */
+#include <siginfo.h>
+#endif
+
+#include <libntpq.h>
+#include <ntpsnmpd-opts.h>
+
+static int keep_running;
+RETSIGTYPE stop_server(int);
+
+RETSIGTYPE
+stop_server(int a) {
+    keep_running = 0;
+}
+
+/* The main function just sets up a few things and then enters a loop in which it will 
+ * wait for SNMP requests coming from the master agent 
+ */
+
+int
+main (int argc, char **argv) {
+  int background = 0; /* start as background process */
+  int use_syslog = 1; /* use syslog for logging */
+
+	{
+		int optct = optionProcess(&ntpsnmpdOptions, argc, argv);
+		argc -= optct;
+		argv += optct;
+	}
+
+	if (!HAVE_OPT(NOFORK))
+		background = 1;
+
+	if (!HAVE_OPT(SYSLOG))
+		use_syslog = 0;
+
+  /* using the net-snmp syslog facility */
+  if (use_syslog)
+    snmp_enable_calllog();
+  else
+    snmp_enable_stderrlog();
+
+  /* Become Subagent */
+    netsnmp_ds_set_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_ROLE, 1);
+ 
+  /* go into background mode, if requested */
+  if (background && netsnmp_daemonize(1, !use_syslog))
+      exit(1);
+
+  /* Now register with the master Agent X process */
+
+  /* call Netsnmp socket startup macro, which will initialize the network stuff if required */
+  SOCK_STARTUP;
+
+  /* Set AgentX socket interface */
+  netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
+                            NETSNMP_DS_AGENT_X_SOCKET, OPT_ARG( AGENTXSOCKET ));
+
+  init_agent("ntpsnmpd");
+
+  /* Try to connect to ntpd */
+  if ( ntpq_openhost("localhost", 0) == 0 )
+  {
+	fprintf(stderr, "Error: Could not connect to ntpd. Aborting.\n");
+	exit(1);
+  }
+  
+
+  /* Register callback functions ...  */
+  init_ntpSnmpSubagentObject();  
+  init_snmp("ntpsnmpd");
+
+  /* Signal handler */
+  keep_running = 1;
+  signal(SIGTERM, stop_server);
+  signal(SIGINT, stop_server);
+
+  snmp_log(LOG_INFO,"ntpsnmpd started.\n");
+  
+  /* main loop here... */
+  while(keep_running) {
+	agent_check_and_process(1); /* 0 == don't block */
+  }
+
+  /* at shutdown time */
+  ntpq_closehost();
+  snmp_shutdown("ntpsnmpd");
+  SOCK_CLEANUP;
+
+  return 0;
+}
+