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From 88d991773b6d8ac416ad2931ea8debc949555c7a Mon Sep 17 00:00:00 2001
From: William <william@blackhats.net.au>
Date: Wed, 6 Nov 2024 14:00:23 +1000
Subject: [PATCH] Add dontfrag/random for fping
Support the dont fragment and randomise packet data options for check_fping
---
plugins/check_fping.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
--- a/plugins/check_fping.c
+++ b/plugins/check_fping.c
@@ -7,7 +7,7 @@
*
* Description:
*
-* This file contains the check_disk plugin
+* This file contains the check_fping plugin
*
* This plugin will use the fping command to ping the specified host for a
* fast check
@@ -60,6 +60,8 @@
int target_timeout = 0;
int packet_interval = 0;
bool verbose = false;
+bool dontfrag = false;
+bool randomize_packet_data = false;
int cpl;
int wpl;
double crta;
@@ -105,6 +107,10 @@
xasprintf(&option_string, "%s-S %s ", option_string, sourceip);
if (sourceif)
xasprintf(&option_string, "%s-I %s ", option_string, sourceif);
+ if (dontfrag)
+ xasprintf(&option_string, "%s-M ", option_string);
+ if (randomize_packet_data)
+ xasprintf(&option_string, "%s-R ", option_string);
#ifdef PATH_TO_FPING6
if (address_family != AF_INET && is_inet6_addr(server))
@@ -303,6 +309,8 @@
{"help", no_argument, 0, 'h'},
{"use-ipv4", no_argument, 0, '4'},
{"use-ipv6", no_argument, 0, '6'},
+ {"dontfrag", no_argument, 0, 'M'},
+ {"random", no_argument, 0, 'R'},
{0, 0, 0, 0}
};
@@ -320,7 +328,7 @@
}
while (1) {
- c = getopt_long (argc, argv, "+hVvaH:S:c:w:b:n:T:i:I:46", longopts, &option);
+ c = getopt_long (argc, argv, "+hVvaH:S:c:w:b:n:T:i:I:M:R:46", longopts, &option);
if (c == -1 || c == EOF || c == 1)
break;
@@ -415,6 +423,12 @@
else
usage (_("Interval must be a positive integer"));
break;
+ case 'R':
+ randomize_packet_data = true;
+ break;
+ case 'M':
+ dontfrag = true;
+ break;
}
}
@@ -506,6 +520,10 @@
printf (" %s\n", _("name or IP Address of sourceip"));
printf (" %s\n", "-I, --sourceif=IF");
printf (" %s\n", _("source interface name"));
+ printf(" %s\n", "-M, --dontfrag");
+ printf(" %s\n", _("set the Don't Fragment flag"));
+ printf(" %s\n", "-R, --random");
+ printf(" %s\n", _("random packet data (to foil link data compression)"));
printf (UT_VERBOSE);
printf ("\n");
printf (" %s\n", _("THRESHOLD is <rta>,<pl>%% where <rta> is the round trip average travel time (ms)"));
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