From 77c773b0dd65e22aa2a37e486516fcc688de12b4 Mon Sep 17 00:00:00 2001
From: Eric Loyd <eric@bitnetix.com>
Date: Fri, 9 Aug 2024 18:08:13 -0400
Subject: [PATCH] Added NCPA mode (with potential double -H lookup) and updated
 debugging

---
 ENV | 40 ++++++++++++++++++++++++++++++++++------
 1 file changed, 34 insertions(+), 6 deletions(-)

diff --git a/ENV b/ENV
index 559a225..6c596da 100755
--- a/ENV
+++ b/ENV
@@ -8,12 +8,16 @@ myHost=""
 myService=""
 myContact=""
 doUpper=""
+doVerbose=""
+doNCPA=""
 
 do_help() {
 cat << HELP_EOF
-This utility is designed to be called by the ARGx parameters of a Nagios configuration as follows:
+This utility is designed to be called by the ARGx parameters of a Nagios configuration as one of the following:
+
+  \$\$(\$USER1\$/env [-n <var>] [-t <default>] [-f <field>] [-d <delim>] [-u] [-H|-S|-C <suffix>] [-v]
+  \$\$(\$USER1\$/env -N [-H suffix]
 
-  \$\$(\$USER1\$/env [-n <var>] [-t <default>] [-f <field>] [-d <delim>] [-u] [-H|-S|-C <suffix>]
 
 Where:
 
@@ -21,18 +25,23 @@ Where:
   default a default value if \$NAGIOS_var\$ is blank (case sensitive)
   field   an awk-compatible field number (potentially to use with <delim>)
   delim   an awk-compatible field delimiter (defaults to space, dash, and colon)
-  -u      Convert the output to uppercase (useful for further levels of indirection)
+  -u      Convert the output to uppercase
   suffix  Take var result and use the it to get NAGIOS__[HOST|SERVICE|CONTACT]<result><suffix>
+  -v      Be verbose (only for debugging)
+  -N      Look for NAGIOS__HOSTNCPA<suffix> (defaults to TOKEN)
+	Can do double lookup if -H is specified directly: -H TOKEN will find NAGIOS__HOSTNCPATOKEN=Level1 which then finds NAGIOS__HOSTLEVEL1TOKEN=Secret
+	Or -H PASS will find NAGIOS__HOSTNCPAPASS=Level2 which will then find NAGIOS__HOSTLEVEL2PASS=SuperSecret
+
 
 The value will always be trimmed of leading and/or trailing spaces/tabs.
 
 If -f is used, then the result will be as if the request were as follows, unless the field starts with a negative, in which case it will read from the last word forward:
 
-  eche \$NAGIOS_var\$ | awk -F <delim> '{print $<field>}'
+  echo \$NAGIOS_var\$ | awk -F <delim> '{print $<field>}'
 
 Examples (service_description is assumed to be "MySQL Check: myDatabase performance"):
 
-  .../env -n servicedesc		Return: "MySQL Check: myDatabase performance"
+  .../env 				Return: "MySQL Check: myDatabase performance"
   .../env -n hostName			Return: "localhost" (or whatever the name of the host is that ran the check)
   .../env -n SERVICESTATE -t 0		Return: current state of the service (0, 1, 2) or 0 if the state is not defined
   .../env -n servicedesc -f 2		Return: "Check" (watch out for defaults!)
@@ -57,14 +66,29 @@ while [ -n "$1" ]; do
     -H) myHost="$2"; shift 2;;
     -S) myService="$2"; shift 2;;
     -C) myContact="$2"; shift 2;;
+    -N) doNCPA="true"; shift 1;;
     -u) doUpper="true"; shift 1;;
+    -v) doVerbose="true"; shift 1;;
     *) shift 1;;
   esac
 done
 
-varName=`echo "NAGIOS_$varName" | tr "a-z" "A-Z"`
+do_debug() {
+  [ -n "$doVerbose" ] && echo "DEBUG: $*"
+}
+
+if [ -n "$doNCPA" ]; then
+  do_debug "NCPA mode active. myHost=$myHost"
+  varName=`echo "NAGIOS__HOSTNCPA${myHost:-token}" | tr "a-z" "A-Z"`
+else
+  do_debug "NCPA mode NOT active."
+  varName=`echo "NAGIOS_$varName" | tr "a-z" "A-Z"`
+fi
+do_debug "Looking for $varName..."
 varValue="${!varName}"
+do_debug "Got varValue=$varValue"
 if [ -n "$myField" ]; then
+  do_debug "myField=$myField"
   if [ "$myField" -lt 0 ]; then
     varValue=`echo "$varValue" | rev | awk -F "$myDelim" -v f="${myField:1}" '{print $f}' | rev`
   else
@@ -72,24 +96,28 @@ if [ -n "$myField" ]; then
   fi
 fi
 varValue=`echo $varValue | sed -e "s/^[ \t]*//" -e "s/[ \t]*$//"`
+do_debug "After processing varValue=$varValue"
 
 [ -n "$doUpper" ] && varValue=`echo "$varValue" | tr "a-z" "A-Z"`
 
 # Check for myHost
 if [ -n "$myHost" ]; then
   myHost=`echo "NAGIOS__HOST${varValue}${myHost}" | tr "a-z" "A-Z"`
+  do_debug "myHost=$myHost"
   varValue=${!myHost}
 fi
 
 # Check for myService
 if [ -n "$myService" ]; then
   myService=`echo "NAGIOS__SERVICE${varValue}${myService}" | tr "a-z" "A-Z"`
+  do_debug "myService=$myService"
   varValue=${!myService}
 fi
 
 # Check for myContact
 if [ -n "$myContact" ]; then
   myContact=`echo "NAGIOS__CONTACT${varValue}${myContact}" | tr "a-z" "A-Z"`
+  do_debug "myContact=$myContact"
   varValue=${!myContact}
 fi