From 5a6adcb7db497fba7b89471a6d58dba80330ff4a Mon Sep 17 00:00:00 2001
From: Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com>
Date: Sun, 4 May 2025 01:42:52 +0200
Subject: WIP - check_icmp refactor 2

---
 plugins-root/check_icmp.d/config.h | 102 +++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 plugins-root/check_icmp.d/config.h

(limited to 'plugins-root/check_icmp.d/config.h')

diff --git a/plugins-root/check_icmp.d/config.h b/plugins-root/check_icmp.d/config.h
new file mode 100644
index 00000000..deae9bec
--- /dev/null
+++ b/plugins-root/check_icmp.d/config.h
@@ -0,0 +1,102 @@
+#pragma once
+
+#include "../../config.h"
+#include "../../lib/states.h"
+#include <stddef.h>
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet/ip_icmp.h>
+#include <netinet/icmp6.h>
+#include <arpa/inet.h>
+#include "./check_icmp_helpers.h"
+
+/* threshold structure. all values are maximum allowed, exclusive */
+typedef struct threshold {
+	unsigned char pl; /* max allowed packet loss in percent */
+	unsigned int rta; /* roundtrip time average, microseconds */
+	double jitter;    /* jitter time average, microseconds */
+	double mos;       /* MOS */
+	double score;     /* Score */
+} threshold;
+
+typedef struct {
+	char *source_ip;
+
+	bool order_mode;
+	bool mos_mode;
+	bool rta_mode;
+	bool pl_mode;
+	bool jitter_mode;
+	bool score_mode;
+
+	int min_hosts_alive;
+	unsigned short icmp_data_size;
+	unsigned short icmp_pkt_size;
+	unsigned int pkt_interval;
+	unsigned int target_interval;
+	threshold crit;
+	threshold warn;
+	pid_t pid;
+
+	int mode;
+	unsigned long ttl;
+
+	unsigned short packets;
+
+	unsigned short number_of_targets;
+	ping_target *targets;
+
+	unsigned short number_of_hosts;
+	check_icmp_target_container *hosts;
+} check_icmp_config;
+
+check_icmp_config check_icmp_config_init();
+
+/* the data structure */
+typedef struct icmp_ping_data {
+	struct timeval stime; /* timestamp (saved in protocol struct as well) */
+	unsigned short ping_id;
+} icmp_ping_data;
+
+#define MAX_IP_PKT_SIZE        65536 /* (theoretical) max IP packet size */
+#define IP_HDR_SIZE            20
+#define MAX_PING_DATA          (MAX_IP_PKT_SIZE - IP_HDR_SIZE - ICMP_MINLEN)
+#define MIN_PING_DATA_SIZE     sizeof(struct icmp_ping_data)
+#define DEFAULT_PING_DATA_SIZE (MIN_PING_DATA_SIZE + 44)
+
+/* 80 msec packet interval by default */
+#define DEFAULT_PKT_INTERVAL    80000
+#define DEFAULT_TARGET_INTERVAL 0
+
+#define DEFAULT_WARN_RTA 200000
+#define DEFAULT_CRIT_RTA 500000
+#define DEFAULT_WARN_PL  40
+#define DEFAULT_CRIT_PL  80
+
+#define DEFAULT_TIMEOUT 10
+#define DEFAULT_TTL     64
+
+/* the different modes of this program are as follows:
+ * MODE_RTA: send all packets no matter what (mimic check_icmp and check_ping)
+ * MODE_HOSTCHECK: Return immediately upon any sign of life
+ *                 In addition, sends packets to ALL addresses assigned
+ *                 to this host (as returned by gethostbyname() or
+ *                 gethostbyaddr() and expects one host only to be checked at
+ *                 a time.  Therefore, any packet response what so ever will
+ *                 count as a sign of life, even when received outside
+ *                 crit.rta limit. Do not misspell any additional IP's.
+ * MODE_ALL:  Requires packets from ALL requested IP to return OK (default).
+ * MODE_ICMP: implement something similar to check_icmp (MODE_RTA without
+ *            tcp and udp args does this)
+ */
+#define MODE_RTA       0
+#define MODE_HOSTCHECK 1
+#define MODE_ALL       2
+#define MODE_ICMP      3
+
+#define DEFAULT_NUMBER_OF_PACKETS 5
+
+#define PACKET_BACKOFF_FACTOR 1.5
+#define TARGET_BACKOFF_FACTOR 1.5
-- 
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