[monitoring-plugins] check_ntp_time: adding offset option

[Jan Wagner]

 Module: monitoring-plugins
 Branch: master
 Commit: a941219b41ba15abb393ae3a1cbdef3d28025c09
 Author: Jan Wagner <w...@cyconet.org>
   Date: Tue Oct  1 08:17:54 2013 +0200
    URL: 
https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=a941219

check_ntp_time: adding offset option

Not sure if this is of use or not - we have a strange requirement to run
certain servers 5 minutes fast. I've added a switch to the check_ntp_time
to allow for this offset.

Thanks to Patrick McAndrew.

---

 plugins/check_ntp_time.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/plugins/check_ntp_time.c b/plugins/check_ntp_time.c
index 72dffbd..d6cf419 100644
--- a/plugins/check_ntp_time.c
+++ b/plugins/check_ntp_time.c
@@ -48,6 +48,7 @@ static int verbose=0;
 static int quiet=0;
 static char *owarn="60";
 static char *ocrit="120";
+static int time_offset=0;
 
 int process_arguments (int, char **);
 thresholds *offset_thresholds = NULL;
@@ -400,7 +401,7 @@ double offset_request(const char *host, int *status){
                                gettimeofday(&recv_time, NULL);
                                DBG(print_ntp_message(&req[i]));
                                respnum=servers[i].num_responses++;
-                               servers[i].offset[respnum]=calc_offset(&req[i], 
&recv_time);
+                               servers[i].offset[respnum]=calc_offset(&req[i], 
&recv_time)+time_offset;
                                if(verbose) {
                                        printf("offset %.10g\n", 
servers[i].offset[respnum]);
                                }
@@ -455,6 +456,7 @@ int process_arguments(int argc, char **argv){
                {"use-ipv4", no_argument, 0, '4'},
                {"use-ipv6", no_argument, 0, '6'},
                {"quiet", no_argument, 0, 'q'},
+               {"time-offset", optional_argument, 0, 'o'},
                {"warning", required_argument, 0, 'w'},
                {"critical", required_argument, 0, 'c'},
                {"timeout", required_argument, 0, 't'},
@@ -468,7 +470,7 @@ int process_arguments(int argc, char **argv){
                usage ("\n");
 
        while (1) {
-               c = getopt_long (argc, argv, "Vhv46qw:c:t:H:p:", longopts, 
&option);
+               c = getopt_long (argc, argv, "Vhv46qw:c:t:H:p:o:", longopts, 
&option);
                if (c == -1 || c == EOF || c == 1)
                        break;
 
@@ -504,6 +506,9 @@ int process_arguments(int argc, char **argv){
                case 't':
                        socket_timeout=atoi(optarg);
                        break;
+               case 'o':
+                       time_offset=atoi(optarg);
+                        break;
                case '4':
                        address_family = AF_INET;
                        break;
@@ -616,6 +621,8 @@ void print_help(void){
        printf ("    %s\n", _("Offset to result in warning status (seconds)"));
        printf (" %s\n", "-c, --critical=THRESHOLD");
        printf ("    %s\n", _("Offset to result in critical status (seconds)"));
+       printf (" %s\n", "-o, --time_offset=");
+       printf ("    %s\n", _("Expected offset of the ntp server relative to 
local server (seconds)"));
        printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
        printf (UT_VERBOSE);
 
@@ -642,6 +649,6 @@ void
 print_usage(void)
 {
        printf ("%s\n", _("Usage:"));
-       printf(" %s -H <host> [-4|-6] [-w <warn>] [-c <crit>] [-v verbose]\n", 
progname);
+       printf(" %s -H <host> [-4|-6] [-w <warn>] [-c <crit>] [-v verbose] [-o 
<time offset>]\n", progname);
 }